1x2 - Adventure Time - Mini Series “Stakes!”

While sunlight engulfs her, Marceline experiences flashbacks. She is comforted by her mother's lullaby as a child; witnesses Simon leaving her to protect her from himself; hunts vampires as a teenager and discovers she can absorb their powers. She befriends a tribe of Hyoomans, who are preparing to escape an impending catastrophe they fear will happen. Marceline helps fight more vampires, and tells the Hyoomans to flee when the Vampire King arrives. In the present, Marceline survives the sunlight, successfully cured of vampirism. Meanwhile, Jake encounters the vampires Marceline had previously killed, resurrected by her freed vampiric essence.