Ron visits the neurosurgeon Usaki Mofu to seek advice about his involuntary pressure on the perpetrators. Mofu suggests further tests at a special research laboratory. Toto is sent by Amamiya to Aichi to check on Adlerauge Kawasemi, who has fallen into a crisis after losing his partner Yamane.

The focus of the investigation is the Mad Chameleon, a criminal known for his random attacks and changing appearance. The Chameleon targets students, steals their smartphones, and looks different in every assault. Toto and Kawasemi investigate the Mad Chameleon's latest attack, which escalated into murder. They gather evidence and witness statements.

Ron appears and shares his findings, which suggest that the Mad Chameleon's victims are lying and involved in a scam. Kawasemi struggles with his limited abilities, but with Ron's help, he manages to identify the culprit based on a defective watch.

The Mad Chameleon is arrested, and his method of hiding the stolen smartphone is exposed. Ron informs Toto that he is seeking medical help for his condition and shows him a possible way to alleviate his symptoms.