On a post-apocalyptic Earth, a robot, built to protect the life of his creator's beloved dog learns about life, love, friendship and what it means to be human.On a post-apocalyptic Earth, a robot, built to protect the life of his creator's beloved dog learns about life, love, friendship and what it means to be human.On a post-apocalyptic Earth, a robot, built to protect the life of his creator's beloved dog learns about life, love, friendship and what it means to be human.