Scott Pilgrim vs The World: Evil actor ex

Whats happening in this movie clip Scott (Michael Cera) meets Lucas Lee (Chris Evans), one of Ramonas (Mary Elizabeth Winstead) ex boyfriends. Lucas hits Scott and then Scott fights every one of Lucas stunt doubles. Rent or buy Scott Pilgrim vs The World here: Whats the movie about Scott Pilgrim (Michael Cera), a lazy musician, meets Ramona Flowers (Mary Elizabeth Winstead) and falls in love with her. During a band competition, he realizes that he has to deal with all of h