Dine and Dash are on the verge of breaking off the partnership because Dine is fed up with Dash, who can't even catch a bird! They seek the help of Cambridge, a British cat who coaches Dash on the art of bird-catching, with disastrous results. When hungry, Dine and Dash break into Little Billy's house looking for food. They find his pet mouse Horatio locked in a plastic mouse ball - the perfect cat toy. Now Horatio must escape from the ball before Dine and Dash make him their lunch.