After the unusual attack (tossing of a bag of feces) on a school flower boy (meaning heartthrob or pretty boy), Sungmin, on February 14, the same attacks began to happen at different high schools on every month of the same day. Rumors say that the next victims will be at Neulparan High School. The studious student Kibum decides to investigate the matter, blogging all of the terror events on the 14th of each month, causing the event to become a hot topic within the student body. After several attacks, Kibum predicts that the next victim will be either Siwon, president of the student body; Heechul, president of the dance club; or Kangin, the captain of the Judo Team.
Cast and characters:
Stars (Super Junior)
Kibum, the narrator and "boy detective" (spoiler)
Siwon, the student body president
Heechul, the Ultra Junior president
Kangin, the Judo Society captain
Sungmin, Flower Boy Victim #1, the popular pretty boy
Hankyung, Flower Boy Victim #2, the basketball player
Yesung, Flower Boy Victim #3, the rock star
Donghae, the Ultra Junior member and Kibum's best friend
Eunhyuk, the Judo Society member
Shindong, the Ultra Junior member (spoiler)
Ryeowook, the student body vice president / School Panda mascot (uncredited)
Leeteuk, School Panda mascot (Ending credits)
Henry Lau of Super Junior-M - background dancer
Key of Shinee - background dancer
Yuri of Girls' Generation - One of the three ballerinas and the girl who joined Ultra Junior near the end of the movie. She was the one who Donghae spoke about to Kibum at the end of the movie, talking about her wave dance.
Kyuhyun, the 13th member of Super Junior, wasn't cast due to still being in recovery from the car accident on April 19, 2007.