Happy treasure cartoon tells in the information developed modern big city, there are five love crafts little friend larne, Lian, road, Jie and Tingting, a team in the palace of the aeromodelling competition, they invented new robot won the small audience of the praise, but lost the election. After their argument, Captain Rahn flay to throw away their inventions, something magical happens, small invention robots should live together, and with the five little friends to become partners. Originally, the robot is an alien computer, as long as people laugh, it can get energy, energy enough it will return the alien home.