When an alien menace and her army of undead minions threaten to enslave the world -- and worse, disrupt Garfield's cookout -- the courageous cat shakes off his lethargy and heads up a team of comic-strip superheroes to save the day. But when the going gets tough and his pals are imperiled by the otherworldly forces, will Garfield prove he's up to the challenge -- or is it too late for the well-fed feline to change his slothful stripes?