It’s already tough enough being a mouse in cruel Cat City, but when the “Cat Syndicate” starts an all-out campaign to rub out mice forever, the situation becomes desperate. But there is one ray of hope – a mouse scientist in the Far East has come up with an ingenious design for a cat trap that could save the mice forever. Can the agents at “Intermouse” get the top-secret plans to Cat City and save the mice? Or will the Cat Syndicate destroy the plans and eliminate all mice forever? Everything rests on the only mouse capable of successfully delivering the plans – special agent Double Seven-O, Gary Gumshoe.