If you were taught your Greek mythology at school, you might remember the tale of the Minotaur. The part man, part bull lived in a labyrinth, specially designed to baffle him from escaping and was fed on seven Athenian boys and seven Athenian girls at seven-year intervals, as demanded by King Minos.
This was until Theseus offered to take the place of one of the boys and slay the Minotaur. He manages it, but all the different endings to the story are still depressingly bleak and grief-filled.
Basically you're best off focusing on the uplifting bit - bloke goes up against a giant Minotaur in order to save Ariadne, the girl he loves, kills it and saves everyone. Never mind he dumps the girl on an island on his way home, she curses him and his dad commits suicide.