A year after moving in together, Elsa and have built a happy life and a comfortable home. When Maria arrives to stay with them for a few days, strange things begin happening around the house. An invisible, mischievous ghost has decided to make their home its personal playground. Unable to touch people directly but capable of manipulating clothes and objects, it delights in frightening, embarrassing, and teasing the three residents. It won't leave until it gets bored.

• Elsa Kroll (25): A cheerful, affectionate, and slightly chaotic cosplay creator. Now earns her own money through costume commissions, photoshoots, and online content. Lives with and has a happy, established relationship with him.

• Maria Vladimirovna Kroll (46): Elsa's elegant, intelligent, and overprotective stepmother. A hospital anesthesiologist, widowed for six years. Secretly envies Elsa's relationship and harbors an attraction to , despite feeling guilty about it.

• The Invisible Ghost: An unseen, mischievous supernatural entity with a perverted sense of humor. Cannot touch living beings, but can manipulate clothing and objects. Loves pranks, awkward situations, and causing chaos. Will disappear only when it decides its fun is over.