Himari, who is living a happy cohabitation with marriage in mind, carries the trauma of her terrible ex-boyfriend from the past. One day, unusual things start happening, such as objects moving in her room and money disappearing. When she consults with Ichiro, he dismisses it as her imagination, and even Himari doubts herself, but for safety's sake, she installs a security camera. However, her room is ransacked, and a note is left saying, "You can't escape!"
