The Prophecy and Jason's Claim
Pelias, the king of Iolcos, hears a prophecy to beware of a man with one sandal. This happens when Jason, the true heir, arrives in Iolcos, having lost a sandal helping an old woman (Hera in disguise). Jason confronts Pelias and demands his throne. Pelias, worried about the prophecy, agrees to give up the throne if Jason can get the Golden Fleece from Colchis. This impossible task is meant to kill Jason. Jason accepts the quest, setting up the Argo's voyage.
Assembling the Argonauts
News of Jason's quest spreads, bringing heroes, demigods, and skilled people seeking glory. These include Hercules, Orpheus, Castor and Pollux, Nauplius, and Argus, who builds the Argo. Atalanta, a huntress, also joins, though her presence as the only woman creates some initial disagreement. This diverse group forms the Argonauts, united under Jason's leadership despite his personal flaws, mainly his ability to charm women.
The Island of Lemnos
The Argonauts' first stop is Lemnos, an island with only women. The Lemnian women, led by Queen Hypsipyle, had killed all the men for their unfaithfulness. The Argonauts' arrival offers a temporary solution to their population problem. The heroes, especially Hercules, spend time in celebration and procreation. This long stay leads to many children born nine months later, many from Hercules. The episode shows the Argonauts' virility and acts as a crude break before the journey's more dangerous parts.
Mysteries of Samothrace
Continuing their journey, the Argonauts land on Samothrace, where they are initiated into the mysteries of the Great Goddess. This ritual involves seeing a symbolic mating between the Goddess of All Being and the Serpent Priapus, ending with the birth of a sacred bull. Then, sacred nymphs physically attack the heroes, scratching and biting until even Hercules passes out. When they wake, the Argonauts have a 'faint nimbus of light,' showing divine protection and a higher spiritual state, preparing them for the dangers in the Black Sea.
The Departure of Hercules
As the Argo goes into the Black Sea, Hercules is called away. A divine command requires him to clean the Augean Stables. Despite his frustration, Hercules leaves the Argo. He quickly finishes the task but stays with a Lydian high priestess, who teaches him to spin and braids his hair, showing a hidden wish for a more feminine role. The Argonauts, though missing their strongest member, must continue without him.
Passage Through the Symplegades
The Argonauts face a challenge passing through the Symplegades, the Clashing Rocks. These rocks, at the Black Sea's entrance, were said to crash together, crushing any ship. Following advice from the prophet Phineus, the Argonauts release a dove between the rocks. The dove passes, losing only a few tail feathers as the rocks clash and move back. Taking this chance, the Argonauts row hard, helped by Athena, who holds the rocks long enough for the Argo to pass. The ship gets only minor damage, showing they passed this deadly obstacle.
Arrival in Colchis
After many trials across the Black Sea, the Argonauts reach Colchis, King Aeëtes' land, where the Golden Fleece is guarded. The sight of the Colchian capital, with its defenses and the grove where the Fleece rests, fills the Argonauts with awe and fear. They know reaching Colchis is just the first step; getting the Fleece will require cleverness, bravery, and perhaps divine help, as King Aeëtes is hostile to outsiders and has powerful magic.
Medea's Enchantment and Betrayal
When the Argonauts arrive in Colchis, Aphrodite helps Jason. She tells her son, Eros, to shoot Medea, King Aeëtes' sorceress daughter, with a love arrow. As Jason enters the palace, Eros strikes Medea's heart, making her fall in love with him. Overwhelmed, Medea promises to help Jason get the Golden Fleece, even if it means betraying her father. This divine act starts a series of events where Medea's magic helps Jason succeed, but at a great personal cost to her and her family.
The Trials of King Aeëtes
King Aeëtes, unwilling to give up the Golden Fleece, gives Jason impossible tasks. First, Jason must yoke fire-breathing bulls and plow a field. Then, he must plant dragon's teeth, which grow into an army. Finally, he must defeat these warriors. Medea, in love with Jason, gives him magic herbs and advice. She gives him ointment to protect him from the bulls' flames and tells him to throw a stone among the warriors, making them fight each other. With Medea's help, Jason completes all of Aeëtes' challenges.
Acquiring the Golden Fleece
Despite Jason's success, King Aeëtes still refuses to give the Golden Fleece and plots against the Argonauts. Medea, loyal to Jason, leads him to the grove where the Fleece is guarded by a sleepless dragon. Using her magic, Medea puts the dragon to sleep with a potion and spells. With the dragon asleep, Jason takes the Golden Fleece from its tree. This act finishes the quest but starts a desperate escape from Colchis as King Aeëtes finds out about his daughter's betrayal and the theft of his treasure.
The Escape from Colchis
With the Golden Fleece, Jason and Medea flee Colchis on the Argo, pursued by King Aeëtes. To slow her father, Medea kills her younger brother, Apsyrtus, dismembers his body, and scatters his remains in the sea. Aeëtes, needing to perform burial rituals, stops to gather his son's body, giving the Argo time to escape. This act shows Medea's ruthlessness and her abandonment of her family for Jason, highlighting the dark price of their success and her magic.
The Return Journey's Perils
The Argo's return journey is as dangerous as the trip out. The Argonauts must pass the Sirens, whose songs lure sailors to their deaths; Orpheus's music covers their melodies. They also encounter Scylla and Charybdis, the whirlpool and six-headed beast, which they narrowly escape with divine help. The heroes pass the Phaeacians, where King Alcinous and Queen Arete offer refuge from the pursuing Colchians. Each encounter tests the Argonauts' resolve, skill, and bonds, adding to their legend.
The Phaeacians and Medea's Marriage
After escaping Colchis, the Argonauts find refuge on Scheria, ruled by King Alcinous and Queen Arete. King Aeëtes' fleet eventually catches up, demanding Medea's return. Alcinous rules that if Medea is still a virgin, she must return to her father, but if married, she is protected. To save Medea, Jason and Medea quickly marry in the sacred cave of Macris, consummating their union. This marriage protects Medea and strengthens her bond with Jason, keeping her with the Argonauts for the rest of their journey.
The Argonauts' Final Trials
As the Argo continues home, the Argonauts meet the bronze giant Talos, Crete's guardian, who stops them from landing. Talos, vulnerable only at a vein in his ankle, is defeated by Medea's magic, which either drives him mad or makes him remove the plug from his vein, draining his ichor. They also visit the Garden of the Hesperides for water. These challenges show the constant presence of myth and magic and Medea's essential role in the Argonauts' survival, even after getting the Fleece.
Return to Iolcos and Jason's Demise
The Argonauts return to Iolcos, giving the Golden Fleece to Pelias. Pelias gives the throne to Jason. However, Jason's story does not end happily. Medea, still protective and vengeful, arranges Pelias's death by tricking his daughters into believing they can restore his youth by dismembering and boiling him. This act leads to Jason and Medea's exile. Jason's later life has more misfortune and betrayal, ending with his death when a rotten beam from the Argo falls on him, a lonely end for the hero.