Shamoto runs a small tropical fish shop. When his daughter Mitsuko is caught shoplifting at a grocery store a man named Murata steps in to settle things between the girl and the store manager. Murata also runs a tropical fish shop and he and Shamoto soon become friendly. However Murata hides many dark secrets behind his friendly face.
The timid, young Asuka is bullied by her classmates. When they embark on a class field trip to Korea, Asuka plans revenge by sending them a cursed phone message they can either pass on or die.
With his two friends, a video-game-obsessed young man finds himself in a strange version of Tokyo where they must compete in dangerous games to win.
