Angela gets a temporary job at a local sports store, and takes Old Tom along. The store owner, Nugget Gristle, doesn't like Old Tom at first, but when Old Tom starts playing on the sporting equipment, he attracts so many customers that Nugget promotes him to head salesman. Nugget then orders a state-of -the-art exercise machine - the Robo-Trainer - but tells Old Tom not to play on it. The minute Nugget's back is turned, however, Old Tom switches the machine on - and it goes berserk. Nugget tries to turn it off, but gets trapped. It's only when Angela and Old Tom work as a team that they can save the day.