Aspiring to become an idol, Ino Sakura moves to Tokyo to live in Mouse House, a dormitory of Rat Productions. Informed of Mouse House's crisis, Ino is told to form an idol group with three "dropout" talents who also live there.

The girls at Mouse House are fired up for a new school semester. After their first day, Hoho tasks them to write a new song for their CD debut and the girls get closer during the process.

Fruit Tart meets Chiko, Nua and Rua of Cream Anmitsu, their producer Riri, and newcomer talent Hemo before their first concert. Hemo helps Ino overcome her nervousness before Fruit Tart's big break.

Ino receives her first fan letter at school from a mystery sender. Hemo joins Fruit Tart as the fifth member and they all do a swimsuit promo shoot.

Fruit Tart comes up with their official autographs to prepare for their CD debut. Hemo and Tone share a fascination with Ino and follow her and Hayu from school. They end up going to karaoke together to practice singing.

Fruit Tart goes on a field trip to observe Cream Anmitsu's concert. After the concert, Fruit Tart gets inspired and tries to come up with ways to be "cute."

Fruit Tart goes on a mission to buy "lucky panties" for their upcoming recording session. On the day of recording, they all struggle so they try to figure out a way to sing better.

Fruit Tart attempts to revive their fabled Mouse House curry. Roko and Nina run into Rua and Nua of Cream Anmitsu at school.

Fruit Tart has their debut CD release concert. Tone helps them sell the merch and Hemo gets nervous before her first performance.

Fruit Tart struggles to come up with an idea to fire up the show as Hoho is told they're in danger if they don't sell at least 1,000 CDs. A mysterious elementary school student shows up to watch the concert.

Fruit Tart hosts an event in Higako backed with immense support from their neighbors in hopes to boost their popularity to become finalists for the National Idol Championships.