Finn, Jake and Marceline are trapped in an underground cavern with no red in sight. If Marceline doesn't feed, like ASAP, she will turn into a vampiric beast and suck out all of Jake's blood! So, Finn heads off to explore the cave and find something red to satiate her until they can be rescued. But time is running out!
Elenco: Jeremy Shada , John DiMaggio , Tom Kenny , Olivia Olson , Dee Bradley Baker , Hynden Walch , Pendleton Ward , Niki Yang , Steve Little , Polly Lou Livingston , Jessica DiCicco , Niki Yang , Maria Bamford .