Kei Enomoto works for a Tokyo-based security company. Enomoto is not an easy person to familiarise oneself with, always calm, quiet, and unapproachable, with a past that is unknown to others. Considered a maniac in Physics, Science, and Architecture, he is certain of the fact that there is no lock that cannot be broken. One day, Enomoto is approached by attorney Junko Aoto, who asks Enomoto to help reveal a mystery behind a locked room murder. (imdb)