When Marcus has to stay after school one afternoon, strange things begin to happen: Suddenly, all the computers turn on at the same time, and a ghostly man in a bathrobe appears several times outside the window. On his way home, a creepy old woman demands the return of a key. What could this mean?, Marcus wonders, confused. When he opens the newspaper at home, he is truly shocked: Next to an accident report is a photo... it’s the man in the bathrobe! Now it’s clear: Marcus must uncover the secret behind all of this!.