Maurice is a streetwise ginger cat who comes up with a money-making scam by befriending a group of self-taught talking rats. When Maurice and the rodents meet a bookworm called Malicia, their little con soon goes down the drain.
Louie the Parrot finds a written will stating that his master bequeathes the family fortune not to him, but to his fellow household pet, a lunkheaded cat named Heathcliff, with the proviso that Louie is next in line to inherit the wealth if Heathcliff dies. So, Louie plots the untimely demise of Heathcliff.
Sylvester's carnivorous pursuit of Tweety Bird continues, winding up the cat's spirit in Hell, where he meets a satanic bulldog.