A high-speed, action-packed comedy space adventure for six- to eight-year-olds. Working at Grandpa Sat's delivery service with Chrystella the mission controller and Vector the engineer, Rocket Boy is the speediest delivery boy in the entire Universe. With his trusty guard sheep Toro at his side, he must outwit his mortal enemy, the evil supercomputer Dr Square and his henchbot Trash, who are desperate to discover the secret of his speed, even if it means taking him apart to get it! Being a delivery boy has never been so exciting or so much fun! Grandpa Sat reminisces about his younger days and the adventures he had with galactic crime fighters, The Rebel Appliance. Suitably moved, he decides to take a little holiday with his old friends, leaving everyone with just one order: stay out of trouble! Of course, Dr Square has other ideas and turns his new Rejuvenator Ray on the Delivery Centre, reducing Rocket Boy, Chrystella, Vector and Toro to cute little toddlers. When Trash returns to Planet Cube with the tots in tow, Square reveals his plan to raise Rocket Boy as his own so that he, and his all important speed, can grow up under his control. Fortunately, Grandpa Sat and his old cronies come to the rescue and turn the tables. The heroic Rebel Appliance reverse the effects of the ray and turn it on Square and Trash, reducing them to bawling toddlers, proving once and for all that you are only as old as you feel.