This is 'Scott Pilgrim vs. the World', the quirky action-comedy starring Mary Elizabeth Winstead, Kieran Culkin & Michael Cera at Scott Pilgrim. Directed by Edgar Wright and released on this date in 2010, the film was based on the Scott Pilgrim series of graphic novels by Canadian author and artist Bryan Lee O’Malley. In the film, Cera's Pilgrim must defeat his new girlfriend's seven evil exes, who are willing to do anything to prevent her happiness with someone else. The film covers the entire six-volume Scott Pilgrim series, however, the final graphic novel was still unfinished when the film was produced, so the movie and comic also have substantially different final acts and endings. It is a heavily condensed adaptation, the movie is especially faithful to Volume 1, but drastically shortens Volumes 2–6. Director Edgar Wright described the film and comic as companion versions rather than identical works, telling The Tufts Daily “My concern was really about getting the tone of the books across… and how to translate that visual imagination to the screen.” Cera described his acting objective in similar terms, telling HollywoodChicago.com “You kind of just have to capture what the graphic novels do so well.” Sadly the film was not a box office hit, but performed much better on home video and gradually became a major cult classic. 

Scott Pilgrim vs. the World: The Comic vs. Movie Ending Explained