One day close to Tanabata, the members of Procellarum are at one of Japan's scariest haunted houses at an amusement park for filming for a television program. On the day of filming, Fuduki Kai, one of the members of Procellarum, had a certain dream. It was a dream that was filled with memories of Tanabata――. As soon as filming began, Kai, who was paired up with Rui, saw something and disappeared, chasing after that something.