“Even if you sit on the wheelchair while I walk, can we still be good friends walking on the same path?” Tze-chun has been wheelchair-bound since his childhood, while Pak-him is lively and active. These two kids, who grew up in different environments, came across each other unexpectedly. On the one hand, they developed friendship because both of them love the cartoon “RoboWheels”, but on the other hand, the physical difference has created a gulf between them. Facing Pak-him’s invitation for outdoor fun, how will Tze-chun deal with it? What kind of chemistry will they have when getting along with each other in this unusual friendship? Can they sustain their friendship like the cartoon “RoboWheels”, and fight together no matter whether they are robots or chariots?