In the heyday of e-sports, “Gunpla Battle” is leading the way in popularity. By scanning their own gunpla and controlling a life-size Gundam projection, they aim to win the national championship. Hiro is the pilot, Takumi is the builder, Kentaro is the programmer, Taichi is the commander, and Sota is the armorer. A variety of crises await these adolescents. Farewells from their friends and conflicts with rival teams. This is a coming-of-age ensemble drama about high school students who gradually grow up with dreams and friendship in their hearts through Gunpla battles.

Ishimori Uka is very shy and has a hard time making friends. When she was a middle school student, students made fun of her by calling her "stone". Around that time, she met Miura Kai with lemon color hair. Because of him, she entered the same high school. Uka now wants to overcome her shyness and have friends. Kai is a popular student at the school, but he doesn't talk much or seem interested in others. He doesn't know why, but he becomes concerned with Uka. Uka has admired Kai, and she now has feelings for him. Kai has a secret, which no one knows.

Sakamichi Onoda is a high school student. He is an otaku, who loves animation and he is also a loner. Although he isn't good in sports, he decides to enroll in the bicycle racing club. Unexpectedly, he finds that he has a talent for bicycle racing. For the first time, he has a friend. Sakamichi Onoda exceeds his limits and finds pleasure in the sport of bicycle racing.