Billy's pet hamster, Mr. Snuggles, celebrates his 10th birthday, so the Grim Reaper comes for him. However, Mandy, Billy's friend, is reluctant in allowing it, so she proposes a deal to the Grim Reaper: if he beats the kids in a game, he can take the hamster, but if he loses, he will spare the hamster's life and become their "best friend forever". The Grim Reaper transports the kids to limbo, where he challenges them to a game of limbo. Despite his best effort, Grim ends up losing because he is attacked by Mr. Snuggles at Mandy's command.
È il compleanno di Mr. Snuggles, il criceto di Billy, il quale prepara una grande celebrazione. A interrompere i festeggiamenti arriva Tenebra, il cupo mietitore, che vuole portare con sé il criceto. Mandy allora propone una scommessa per cercare di salvare l'animale.
El hámster de Billy, el Sr. Cariñoso, celebra su décimo cumpleaños por lo que Puro Hueso viene a buscarlo. Sin embargo, Mandy, la amiga de Billy, es reacia a permitirlo, por lo que le propone un trato a Puro Hueso: si él derrota a los niños en un juego, puede tomar al hámster, pero si pierde, le ahorrará la vida al hámster y convertirse en su "mejor amigo para siempre". Puro Hueso transporta a los niños, donde los desafía a un juego de limbo.
