When an android replica of a boy is rejected by his aggrieved creator, he goes off to find his own identity in an adventure that would make him the greatest hero of his time. Set in futuristic Metro City, Astro Boy is about a young robot with incredible powers created by a brilliant scientist in the image of the son he has lost. Unable to fulfill the grieving man's expectations, our hero embarks on a journey in search of acceptance, experiencing betrayal and a netherworld of robot gladiators, before he returns to save Metro City and reconcile with the father who had rejected him.