The Labors
When he had come of age and already proved himself an unerring marksman with a bow and arrow, a champion wrestler and the possessor of superhuman strength, Heracles was driven mad by Hera. In a frenzy, he killed his own children.To atone for this crime, he was sentenced to perform a series of tasks, or "Labors," for his cousin Eurystheus, the king of Tiryns and Mycenae. By rights, Hercules should have been king himself, but Hera had tricked her husband Zeus into crowning Eurystheus instead.

Labor 1: The Nemean Lion