The Myagkov family is forced to sell their house and move into an old apartment. However, they discover that it already has an owner - a cheeky ginger cat. Their attempts to catch the furry troublemaker prove to be unsuccessful. And when the head of the family, Mikhail, takes a decisive step to get rid of the cat, he accidentally steps on a broken extension cord - getting electrocuted and gaining the superpower to hear and understand the mischievous ginger. The Myagkovs decide to keep their four-legged roommate, and from that moment on, the life of an average Russian family undergoes a radical change. They experience a "Kotostrofa" (a cat-astrophe).