After an unlikely ensemble of five students, Olivia (Bridgit Mendler), Wen (Adam Hicks), Stella (Hayley Kiyoko), Mohini (Naomi Scott) and Charlie (Blake Michael), meet in detention, they start a band - Lemonade Mouth - that soon resonates with students sidelined by the high school elite. The students in the band believe that it’s time for the students of Mesa High to stand up and be heard. However, not everyone at school likes their new band, especially since the popular rock group Mudslide Crush is determined to win the Rising Star music competition at Mesa High!