Scott Pilgrim (Michael Cera), besides being the bass player in an average garage band called Sex Bob-omb, doesn't have a lot going for him, he has no job, isn't very popular and doesn't have a girlfriend. But his life changes dramatically when he meets Ramona Flowers and becomes her boyfriend. Life seems great; he finally has a girlfriend who he really cares about but now must tackle a dangerous mission in order to keep her. He must defeat all of Ramona's evil ex boyfriends who are coming to kill him!