Granny Smith is an ordinary little old lady when something extraordinary happens. She is struck by rays from a super machine and becomes ... Super Gran! Extra fast, strong, with X-ray eyesight, Super Gran sets out with her grandson Willie and a girl called Edison to right all the wrongs in their town. Along the way, Super Gran performs amazing feats, foiling a back robbery and saving a child from drowning. But the super machine has been stolen by the Inventor, who has very bad plans for it. Can Super Gran and her loyal sidekicks save the day?