Recently, Ino Sakura relocated to Tokyo to join Fruit Tart, which is a newly formed idol group. Apart from her, three other members make up the group, namely Roko Sekino, a washed-up child actor, Hayu Nukui, a failed musician, and Nina Maehara, a model who is yet to land her first gig. All four of them are now living together in their new dormitory, the Mouse House. However, their joy is short-lived as they discover that Fruit Tart owes one hundred million yen, and they haven't even started yet. The group is facing the possibility of disbanding, and their dormitory being demolished, leaving them without a roof over their heads if they don't refund the amount. The girls, therefore, need to start from the bottom and strive to make a name for themselves by crafting their music and gaining popularity in the idol society. Thankfully, Hemo Midori, a skilled idol, is an ardent admirer of Sakura and decides to join the group. The group members work hard each day with smiles on their faces, determined to become successful idols and enjoy every moment of their journey.