Miles, a teenage dirt bike rider, stumbles upon M.A.X., an escaped military prototype that quickly develops into an intelligent and nearly unstoppable creature. Soon, he discovers that M.A.X. was developed in absolute secrecy as a remotely controllable beast, engineered to replace American soldiers on the front lines, and kill autonomously. As their relationship deepens, Miles is forced to make decisions that will affect not only his life but also the lives of those closest to him.