Medea is a fabula crepidata (Roman tragedy with Greek subject) of about 1027 lines of verse written by Lucius Annaeus Seneca. It is generally considered to be the strongest of his earlier plays. It was written around 50 CE. The play is about the vengeance of Medea against her betraying husband Jason and King Creon. The leading role, Medea, dominates the play with over half of the lines spoken by her. Medea contains lots of themes, one of them is that she is the punishment of humanity because of her superiority over other characters. She was sent by the gods to punish Jason for his sins. Another theme is her powerful voice that cannot be silenced, even King Creon could not silence her.
Medea falls in love with Jason while he is on his quest for the Golden Fleece. Medea uses her supernatural powers to aid Jason in completing the tasks that King Aeets (Medea's dad) set. The three tasks were: yoke the fiery bulls, compete with the giants, and slay the dragon that was guarding the fleece. Medea kills her own brother to distract her father and be able to escape with Jason . Again they had to flee when Medea uses her powers to get Pelias killed by his own daughters. They finally settle in Corinth where they had two sons.
In order to climb the political ladder, Jason leaves Medea for Creusa who is the daughter of King Creon. Medea opens up the play by cursing Creusa and King Creon (1-44). King Creon gives Medea one day before she is exiled and she does not take Jason's advice on going peacefully(192-557). She uses a regal robe to poison and sends it as a gift for Creusa on her wedding day with Jason. The chorus describe in great detail the rage, scorn, and anger that Medea felt as she plotted her revenge. The chorus prays to the gods that Jason (the leader of the Argonauts) is spared from Medea's vengeance (579-652). Medea's curse contains poisons, snake blood, herbs, and the invocations to all the underworld gods. The cursed robe kills Creusa and Creon by catching on fire when Creusa puts it on. Creon tries to put out his daughter but is unsuccessful and he catches on fire too (817-843). Their death does not satisfy Medea but only awakens her vengeful spirt more. Jason's betrayal blinds Medea so much that her number one priority is hurting Jason. Even if hurting Jason means hurting her children. Medea sacrifices her children from the roof of her house in order to hurt Jason (982-1025). Medea escapes in a dragon chariot while she throws the bodies of the boys down to Jason. Jason closes the play by stating that there are no gods because otherwise such acts would have not been committed (1026-1027).