On her very first day at Satogahama Municipal High School, Arihara Tsubasa tries to start a girls' baseball team.

The girls try to find a place to practice and visit a baseball shop to buy equipment.

With a field, an advisor, and five members, the girls' baseball association begins to practice and adds two unique members to its ranks.

Tsubasa opens up to the other members about why she decided to start a girls' baseball team at Satogahama instead of joining a club team.

Ryou's addition means the team now has nine members; Tsubasa suggests that they play a practice game against another school.

The team is forced to put practices on hold until exams are over; Tsubasa has trouble studying and has Tomoe help her get through the exams; Tomoe is under pressure of her own.