1x4 - Adventure Time - Mini Series “Stakes!”

The Empress arrives at the Ice Kingdom and uses her hypnotism power on the Ice King, who captures Finn for her. Marceline attacks and escapes with Finn, pursued by the Ice King. Marceline tries to jog the Ice King's memory, but it turns out he was never hypnotized and this is how he always acts around women. Marceline then attacks the Empress, who has the upper hand until she is paralyzed by a special gun Bubblegum developed. Marceline kills the Empress and reabsorbs her power of invisibility. She apologizes to her friends for trying to fight the vampires alone and tells them that they will hunt the remaining vampires together.