In 2019, with the highly developed modern science and technology, robots have spread to all aspects of the human world. The Robotics Department of Central seed Island High School, a small group of only two people, is obsessed with the handheld game Bazi Haixiang (Ryuhei Kimura) and the robot-loving minister Seto Aisuho (Nanjo Ainai). Faced with the situation of abolishing the ministry due to too few people. Xiaoqiu's dream is to take the biggest dream of the department, such as the tall and small robot GUNVARL, to participate in the Tokyo Expo to be held next year. In order to get funding smoothly, the robot department must win the ROBO-ONE competition. After the twists and turns and exciting competition, the robot department survived smoothly and absorbed the highly talented Rigao (Hosoki Jiazheng) into the department. The construction of giant robots is carried out in an orderly manner, magnificent dreams bloom freely, and the shadow of conspiracy quietly hangs over seed Island, all of which are closely related to the events of nine years ago. This film is based on the original work of Shikura Chiyomaru.