Rose and Surf earn their places to join an academic competition alongside Lily. Rose sets out to investigate when the earnings from the competition, as well as from their daily fundraising routine, mysteriously went missing.

Rose is interested in becoming the sports club president, as Bom is stepping down. According to a traditional rule of the club, the challenger must defeat the current president in order to overthrow him. Rose challenges Bom at Taekwondo, without knowing that another set of eyes is already planning to overthrow her.

The school's club event is fast approaching. Rose, Surf, and Boo work diligently on a plan to expose the corruption in the school which is affecting both the student body and some of the school staff.