"Sherlock Bones" is a second-year student at a London high school. One day, he witnesses a crime. A knife is found in the hand of the teacher, but it is not a suicide. The teacher has a device that allows him to send a picture and a text message. The phone has been sent to many people, and the teacher believes that the boy who jumped from the tower is following his footsteps. He believes that he will find the boy and send the picture to his friends. The girl who sent the picture is the teacher's sister, and she has an alibi for the murder. She asks the teacher to take the picture of the boy, and to make sure that it looks exactly like the one in the picture.