Jacky, the little mouse, lost his girlfriend Rosi. Now he is desperately running through several mazes searching for her and meeting many critters. Most of these are not very friendly. The rats don't like him, the snakes consider him their food. Jacky has to quarrel with them in more than 150 rounds. He will have to find fruits, coins and cheese, collect dots, hunt cockroaches, use a gun, win races and beware of ghosts.