Original story by Yasushi AKIMOTO, writer of the mega hit movie One Missed Call (Chakushin Ari) series. As the project was in development with an idea of an "infectious song (Densen-Uta)", one of the staff called out..."There was a real Densen-Uta!" He discovers on the internet of a song back in 1933, Hungary, which caused mysterious deaths of many people. In "Densen-Uta", high school girls get mixed up in the Japanese version of this infectious song, and with the help of third rate gossip magazine reporter, tries to solve the mystery and horror behind the song. They come to know just how real, an urban legend can become.