Persian cat
So-yeon works as a groomer in a pet shop called Kitty N Puppy, but has claustrophobia due to childhood trauma. A woman comes to the pet shop to collect her Persian cat, Bidanyi. The next day, the woman is found dead in an elevator, but Bidanyi is unharmed. The police are unable to determine the cause of her death. So-yeon's friend Kim Jun-seok, one of the police officers investigating the murder, gives her Bidanyi to look after.