Charlie Kenton is a washed-up fighter who retired from the ring when robots took over the sport. After his robot is trashed, he reluctantly teams up with his estranged son to rebuild and train an unlikely contender.

Every child comes into the world full of promise, and none more so than Chappie: he is gifted, special, a prodigy. Like any child, Chappie will come under the influence of his surroundings—some good, some bad—and he will rely on his heart and soul to find his way in the world and become his own man. But there's one thing that makes Chappie different from any one else: he is a robot.

Curmudgeonly old Frank lives by himself. His routine involves daily visits to his local library, where he has a twinkle in his eye for the librarian. His grown children are concerned about their father’s well-being and buy him a caretaker robot. Initially resistant to the idea, Frank soon appreciates the benefits of robotic support – like nutritious meals and a clean house – and eventually begins to treat his robot like a true companion. With his robot’s assistance, Frank’s passion for his old, unlawful profession is reignited, for better or worse.