Min-young moves onto the fifth floor of a new studio apartment with her six-year-old daughter, Joo-hee. She's concerned when her downstairs neighbor, HAN Chang-soo, says that he cannot tolerate the noise above him, even though the two women live tranquilly. Furthermore, she is anxious about other residents' strange behaviors – never mind the mysterious deaths. Min-young hardens herself mentally after the move into the new house, largely because of her daughter's unprecedented odd behavior and continual run-ins with a bizarre woman. Convinced that Joo-hee has fallen sick and perturbed by the mysterious events around the studio...
