Rio and Henry the tank are stranded in the Desanian desert and must find their way to the border while evading capture. Rio eventually establishes a rapport with Henry, but they are captured by Ruby and the Desanian leader who try to analyse the tank, but are unable to understand how it operates. Rio realizes she must to activate the self-destruct instruction to destroy Henry but she cannot do it. When the Desanian troops are about to eliminate Rio as being of no further use, a satellite beam activates Henry, and the tank goes on the attack, defeating the Desanian forces but being badly damaged in the process. Rio and Henry limp to the border and are picked up by Team Warrior and returned to Japan where they discover Henry’s intelligence is stored in the satellite. Rio promptly spends the reward money on fashion items.