Scott Pilgrim (Michael Cera) tem 23 anos, integra uma banda de colégio, vive trocando de emprego e tem um namoro firme. Sua vida está maravilhosa, até conhecer Ramona V. Flowers (Mary Elizabeth Winestead). Ele logo se apaixona perdidamente por ela, só que não será fácil conquistar seu amor. Para tanto ele precisa enfrentar os sete ex-namorados dela, que estão dispostos a tudo para impedir sua felicidade com outra pessoa.

The film tells the story of Ariel, a 21-year-old who decides to form a rock band to compete for a prize of ten thousand dollars in a musical band contest, this as a last option when trying to get money to save their relationship and reunite with his ex-girlfriend, which breaks due to the trip she must make to Finland for an internship. Ariel with her friend Ortega, decides to make a casting to find the other members of the band, although they do not know nothing about music, thus forming a band with members that have diverse and opposite personalities.

Charlie and Gerald reunite their failed 2000's boy band for a competition whose prize money could remedy all of their financial woes. What could go wrong?

A high school bandleader captures the interest of a popular co-ed.