Ruka Takayama (played by Haruka Kiki) and Ruoko Seto (Ayamoto Tsukii) who are studying at Minoki High School(played by) is a pair of inseparable childhood sweethearts, so they are collectively called “RukaRuka”.One day in the third year of high school, Ruka, who did not join any club and lived a monotonous life in school and after school, was told by a friend that you came to school every day and then went home. Life has not changed.

When she was bored, she accidentally discovered a mysterious classroom decorated with snacks deep in the school building, and she couldn't help but walk in - it was the plastic model department that was on the verge of being a waste department.With the encouragement of consultant Mr. Pengtian, the two tried to make models and were gradually attracted by their wonderful charm, thus getting involved in a bigger campus storm...