Akane's excited to spend Halloween with her grandmother. Until a criminal takes an interest in her and she has the one and only Kogami as her body guard. Who knows what will happen?

When the Queen of the Nightosphere(a.k.a Marshall's mother) is trying to bring Marshall back to the Nightsphere, it's up to Fionna to save him. What will she have to do to save him? What will she lose?