One day, Mio Kanesaka gets a mysterious video from a strange man wanting to blackmail her. Asking him to hold off a while and explaining that he's obviously got the wrong person, Mio also get sucked into the hunt for the criminal seeing as she's the sort of person who can't resist helping those in need. It all started from a case of mistaken identity, but soon a strange new relationship is born in this suspense-filled, thrilling love story.