Cats may get up to nine lives, but they have to work for them. The Great Chief Mawser in the Sky has sent Eins and Zwei back to Earth one snowy Christmas Eve with a chance to earn their second and eighth lives. All they have to do is perform a good deed of service to humans before the sun rises. As it happens, on this very night a demonic cat has hatched a plot to kidnap Santa Claus. With the unlikely help of a nervous white mouse and a secret society known to good and noble cats, they have just hours to defeat the demon cat's evil plans, save Santa Claus and earn their new lives on Earth.