The story follows the protagonist Haiba Sumio who attends Toyko High School. Haiba Sumio has an interesting ability called the dream diary, a diary in which when he falls asleep can predict future events. Eventually, the story's antagonist, Enigma, captures seven students, all of whom have special powers, who must take part in the e-test. In order to successfully complete the e-test, passwords hidden throughout the school must be found within 72 hours. Upon completition of the e-test, Enigma promises to bestow their deepest desire that is written on cards that they recieved once captured. At the same time, there are "shadows" around the school that attempt to kidnap the students. It is later determined that the "shadows" are in fact humans who have fallen victim to prior shadows.

Informations Source: Wikipedia