Jacob Louis Yco is determined to give justice to the death of his mother and his sister upon meeting a girl named Mayday Larsson who will help him , without any fear they went back to Shinzui Academy to reveal the untold story.
Jezreel is the daughter of the two famous detective, Akihiro and Alyana Sy, both of her parents where murdered and Jezreel knew that the reason behind it is the case that they are investigating, because of what happened to her parents, Jezreel decided to go to Shinzui Academy to unfold the mystery behind it.