The teacher of the Detective Boys decides to give the class a mental test. Conan is called by the teacher so the class must solve it without him. They solve it with the help of two silent out-casted students. It turns out it was a plan to include the new students so they feel more involved.

In the hospital, the FBI talk about Rena Mizunashi. Elsewhere, a child witnesses the murder of a rock'n roll star, and Conan and the group try to figure out what he saw. Conan gets suspicious of Eisuke who starts showing similarities to Kir.