“Bean stomped her foot. 'Ivy, if you don't come up with a good idea right now, I'm going to turn you into a frog!'”
— Bean's frustration with Ivy's lack of ideas for entertainment.

Genre
Children's
Reading Time
60 min
Key Themes
See below
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When Bean's older sister babysits, Ivy and Bean devise a plan to prove she's the worst, leading to unexpected and funny chaos.
The story starts with Bean's parents announcing they are going out and Nancy, Bean's older sister, will babysit. Bean immediately groans, seeing Nancy as bossy and unfair. She complains to her best friend, Ivy, about Nancy's poor babysitting. Ivy, a creative thinker, suggests they could prove to Bean's parents that Nancy is 'the worst babysitter in the world.' Their goal is to make Nancy look so bad she'll never babysit them again. The girls brainstorm ways to do this, driven by their shared dislike for Nancy's authority.
Ivy and Bean meet in Bean's backyard to finalize their plan. Their strategy involves several steps to make Nancy's evening miserable and her babysitting look bad. The first part involves making a huge mess, specifically creating a 'slime monster' in the living room. Next, they plan to be very loud and disobedient, refusing to go to bed. Their ultimate goal is to annoy Nancy until she gives up and calls their parents, or at least looks completely overwhelmed when the parents return. They are confident they can carry out this plan.
As soon as Bean's parents leave, Ivy and Bean act fast. They gather household items: flour, water, soap, and glitter from Ivy's art supplies. They mix everything in a large bowl on the living room floor, quickly making a sticky, gooey, expanding 'slime monster.' The process is very messy, with flour on the carpet and goo splattering on furniture. They enjoy the chaos, knowing Nancy will be angry when she sees their 'creation.' The living room quickly becomes a disaster, just as they planned.
Nancy, at first unaware, comes downstairs to check on the girls and sees the flour-covered, goo-splattered living room and two happy children. She is shocked. Instead of yelling or calling their parents, Nancy takes a deep breath and tries to take control. She tells them to stop and starts to look at the damage. Ivy and Bean are surprised by her calm (though clearly annoyed) reaction, as they expected a bigger outburst. This unexpected response from Nancy slightly disrupts their plan.
To the girls' surprise, Nancy doesn't just clean up the mess herself; she makes Ivy and Bean help. She gives them rags and a spray bottle and tells them to start wiping up the slime. This was not part of their plan. They grumble, but Nancy is firm. They find themselves scrubbing the floor and furniture, which is much less fun than making the mess. The cleaning is slow and boring, and the girls realize their 'slime monster' plan has somewhat backfired, as they are now the ones doing the work.
After cleaning up, Ivy and Bean move to the next part of their plan: being loud and refusing to go to bed. They jump on the couch, sing loudly, and play noisy games. Nancy, however, remains calm. Instead of yelling, she simply tells them that if they make too much noise, they'll go to bed early. When they continue, she calmly leads them to their rooms, offering them a choice of storybooks. Her calm manner and unexpected actions make it hard for the girls to provoke her into a meltdown, to their frustration.
Nancy starts reading a story to Ivy and Bean. To their surprise, she doesn't choose a boring book. Instead, she picks an exciting adventure story with dragons and knights. She reads with enthusiasm, using different voices for the characters. Ivy and Bean, despite themselves, become absorbed in the story. They forget their mission to annoy Nancy and are truly entertained. This unexpected turn completely derails their plan to be disobedient, as they are now captivated by Nancy's storytelling.
After storytime, Nancy offers Ivy and Bean a special snack: ice cream sundaes with sprinkles and chocolate syrup. This is another unexpected treat, as their parents usually limit sweets. The girls, still a bit cautious but unable to resist, eagerly accept. As they eat their sundaes, they relax and even chat casually with Nancy. The delicious snack, combined with the engaging story, makes them momentarily forget their goal of proving Nancy is a terrible babysitter. They are having fun, which is the opposite of what they intended.
As the evening goes on, Ivy and Bean find themselves having a surprisingly good time with Nancy. She lets them stay up a little later than usual, plays a fun board game with them, and even helps Ivy with a magic trick she's learning. They realize that Nancy is not being 'the worst babysitter in the world' at all; in fact, she's quite fun. Their initial dislike starts to fade, replaced by enjoyment. They begin to wonder if their plan to get rid of her was a mistake.
Bean's parents finally return home. Ivy and Bean now face a problem. They had planned to tell their parents how terrible Nancy was, but the evening turned out to be fun. They hesitate, looking at Nancy, who gives them a small, knowing smile. When asked how the babysitting went, Bean, after a moment, simply says, 'It was fine.' Ivy nods. They realize that while Nancy wasn't 'the worst,' she also wasn't perfect, and they decide to keep their true feelings about the fun evening a secret, keeping their reputation as mischievous kids.
After their parents have gone to bed and Ivy has left, Bean thinks about the evening. She realizes that Nancy, despite her initial bossiness, had been a good babysitter. She hadn't yelled, she had been fair, and she had even made the evening fun. Bean understands that her idea of Nancy as 'the worst' might have been exaggerated. She and Ivy had set out to prove a point, but Nancy had, without trying, proven them wrong by simply being a good and engaging babysitter. The experience gives Bean a new view of her older sister.
The Protagonist
Ivy learns that even perceived adversaries can have unexpected positive qualities, challenging her initial judgments.
The Protagonist
Bean softens her view of her sister, realizing Nancy isn't always 'the worst' and can even be fun.
The Supporting
Nancy demonstrates her maturity and ability to handle difficult situations, earning a quiet respect from the girls.
The Mentioned
They remain consistent, unaware of the full extent of the girls' scheme or Nancy's clever handling of it.
The main theme is how Ivy and Bean's first idea of Nancy as a 'terrible babysitter' changes because of what she actually does. They start the evening sure she will be awful, but Nancy's calm and engaging way, from making them clean the slime to reading a good story and offering sundaes, proves their ideas wrong. This theme is clear when the girls find themselves enjoying the evening, despite trying to ruin it, which makes them rethink Nancy. This theme reaches its peak when Bean struggles to tell her parents Nancy was 'the worst.'
““Nancy was not being the worst babysitter in the world. She was being… fun.””
Ivy and Bean enjoy causing trouble, especially with the 'slime monster,' to reach their goal. However, they quickly learn that mischief can have unexpected results, as Nancy makes them clean up their own mess. This goes against their expectation of just causing trouble and having Nancy deal with it. The theme shows that actions have reactions, and sometimes the 'fun' of mischief can lead to tedious work or unexpected outcomes that challenge their original plan. Their attempt to make Nancy miserable actually leads to them having a better time than they expected.
““This was not what they had planned. Cleaning up was not nearly as fun as making the mess.””
The story looks at the typical relationship between younger and older siblings, marked by initial dislike, perceived unfairness, and eventual, if reluctant, respect. Bean's constant complaints about Nancy's bossiness are typical of this dynamic. But during the evening, Nancy shows maturity and a caring side that slowly lessens Bean's resentment. By the end, while Bean doesn't openly praise Nancy, there is an unspoken understanding and a shift in her view, suggesting a more complex sibling bond than first shown.
““Nancy always acted like she was the boss of everything, just because she was older.””
Nancy manages Ivy and Bean well not through strict rules, but by engaging them with stories and play. Her choice of an exciting adventure story completely captures the girls, making them forget their mischievous goals. Later, playing a board game and helping Ivy with a magic trick further strengthens their enjoyment. This theme shows how creative engagement and interactive play can be much more effective in managing children (and winning them over) than just authority or punishment, highlighting the positive effect of shared imaginative experiences.
““Even Bean leaned forward, listening. The dragon was coming! This was a really good story.””
A physical manifestation of the girls' mischievous plan.
The 'slime monster' serves as the initial centerpiece of Ivy and Bean's plan to sabotage Nancy's babysitting. It is a tangible and highly visible act of rebellion designed to create chaos and prove Nancy's incompetence. However, its function as a plot device quickly shifts when Nancy forces the girls to clean it up, turning their intended act of mischief into an unexpected chore. This subverts the girls' expectations and introduces the theme of consequences, directly influencing the story's direction and Nancy's effective handling of the situation.
An unspoken list of expectations for a 'bad' babysitter.
While not explicitly stated, Ivy and Bean operate with an internal 'checklist' of what makes a babysitter 'the worst' – being strict, boring, easily flustered, and unable to control them. This unspoken device drives their actions and expectations for Nancy's behavior. Nancy, however, systematically defies each item on their mental list through her calm demeanor, engaging activities, and unexpected treats. This contrast between the girls' expectations and Nancy's actual performance highlights the theme of perception versus reality, driving the narrative's central conflict and resolution.
The audience knows the girls' plan, but Nancy initially does not.
Dramatic irony is employed throughout the story, particularly in the early stages. The reader is privy to Ivy and Bean's elaborate plan to make Nancy look bad, while Nancy herself is initially unaware of their malicious intent. This creates humor and suspense as the reader anticipates Nancy's reactions to the girls' schemes. As the story progresses, Nancy's clever responses to their mischief often make her seem one step ahead, adding another layer of irony as the girls' plans backfire in amusing ways, ultimately leading to their change of heart.
“Bean stomped her foot. 'Ivy, if you don't come up with a good idea right now, I'm going to turn you into a frog!'”
— Bean's frustration with Ivy's lack of ideas for entertainment.
“'We need to take care of her,' Ivy said. 'She's our responsibility.'”
— Ivy convincing Bean that they need to look after their new babysitter, Nancy.
“'Babysitters are like giant babies,' Bean explained. 'They need to be fed and entertained and kept from harm.'”
— Bean's unique interpretation of what babysitting entails, applied to Nancy.
“Ivy had a feeling that this was going to be a very interesting afternoon.”
— Ivy's internal thought as their plans to 'take care of' Nancy begin.
“'She's not getting enough fresh air,' Ivy declared. 'We need to take her outside.'”
— Ivy's reasoning for getting Nancy out of the house.
“Bean grabbed a handful of grass. 'Here, Nancy. Eat your vegetables.'”
— Bean attempting to 'feed' Nancy grass, believing it's healthy.
“'We should make her a fort,' Ivy said. 'Babies love forts.'”
— Ivy suggesting an activity to entertain Nancy, based on her 'baby' theory.
“The fort was a masterpiece of blankets, pillows, and wobbly chairs.”
— Description of the fort Ivy and Bean built for Nancy.
“'She needs a story,' Bean whispered. 'A very exciting one.'”
— Bean deciding Nancy needs to be read to, like a baby.
“Nancy just smiled. She was a very good baby, even if she was big.”
— Ivy's internal reflection on Nancy's good-natured reaction to their antics.
“'Maybe she's not a baby anymore,' Ivy said, a little sadly.”
— Ivy's realization that Nancy might not be a 'baby' after all.
“'She's just... Nancy,' Bean concluded.”
— Bean's simple, final understanding of their babysitter.
“And that was a much better thing to be than a giant baby.”
— The narrator's concluding thought on Nancy simply being herself.
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