Cartoon Network's fantastic work, originally titled "Grim and Evil." It tells the story of two 10-year-old kids from Endsville—the foolish, impulsive Billy and the perpetually angry, cynical Mandy. While celebrating the 10th birthday of Billy's pet, an elderly golden hamster named Mr. Snuggles, they unexpectedly attract the Grim Reaper, who has come to claim the hamster's life. They then challenge the Reaper to a game of limbo, and Billy wins, forcing the Grim Reaper to stay and live with Billy and Mandy in the human world. And so, the story begins...