An aspiring idol recruits three former dropouts to form a musical group.

High school student Ino Sakura comes to Tokyo to fulfill her dream of becoming an idol. She is given a room in the Mouse Dormitory, which is occupied by prodigies past their prime: former child actress Roko Sekino, former musician Hayu Nukui and former fashion designer Nina Maehara. All three are burnt out and are indifferent to Sakura's ambition. When news comes of the Mouse Dormitory being demolished due to school budget costs, Sakura takes on this obstacle in a grand maneuver: she rallies her dormitory of former dropouts into an idol group, Fruit Tart, to raise the money needed to keep their Dormitory going.

Sakura Ino. After taking a bath, she often practices gravure poses by herself. Sekino Roko. She has many fantasies inside her head. Nukui Hayu. Ever since she was little, she secretly dreamt of being a cute wife. Maehara Nina. She is a fashion model. Kajino Hoho. She is completely hopeless on her days off work. In the corner of entertainment world, in the dorm nicknamed Nezumisou, in order to survive the harsh battlefield known as the entertainment world and to become better, the girls compete day after day to enhance each other's skills to later become famous models, idols and singers.—Scientiiaa