In Toronto, 22-year-old Scott Pilgrim, the bass guitarist for the band “Sex Bob-omb”, begins dating high schooler Knives Chau, much to the disapproval of his friends. Soon, Scott meets an American girl, Ramona Flowers. Ramona begins appearing in Scott’s dreams, and he becomes obsessed with Ramona, losing interest in Knives. While playing in a battle of the bands sponsored by one “G-Man Graves” for a record deal, Scott is attacked by Matthew Patel, who introduces himself as the first of Ramona’s “evil exes”. Scott defeats Patel and learns that, in order for them to date, he must defeat all seven of her evil exes.