Fan Dao Da Ye became famous for his unique creativity and overwhelming mechanical engineering knowledge and technology. One day, Da Ye met a car robot "Bentolio Bendras" from space. The robot's nickname is "Ben Ben", and the two lived together by chance. At this time, the direct cadres of the large space invasion force "Haxilian" that attacked different planets suddenly attacked! In order to collect energy "crying oil" from the screams of humans, they chose the earth as their next target. Da Ye, together with intelligence gathering expert Naruta Shoshiro and professional driver Shibudo Mirai, formed the Benben! After that, Akira Jō and Zhenqi Genban also joined, and the five of them fought against the threat "Haxilian" from space. Skillfully control the vehicle, the hero creates a super machine by himself, transforms and combines with the robot to fight! The birth of an invincible super avant-garde hero!