Beyond the Grotto
Finn and Jake follow their Sea Lard into the pond in front of their home, and in doing so, are led to a strange new world.

Cast
Jeremy ShadaFinn the Human (voice)
John DiMaggioJake the Dog (voice)
Tom KennyIce King (voice)
Hynden WalchPrincess Bubblegum (voice)
Olivia OlsonMarceline the Vampire Queen (voice)
Niki YangBMO / Lady Rainicorn (voice)
Pendleton WardLumpy Space Princess (voice)
Polly Lou LivingstonTree Trunks (voice)Adventure Time on tvt

