Aya is a detective at the Kanagawa Prefecture Police Station. Yuriko is newly assigned to work at the same police station. She previously worked in the office at the Tokyo Metropolitan Police Department. Aya and the other detectives know that it is uncommon for someone to transfer to Kanagawa from Tokyo and work in the field from office work.
Detective Iida is a co-worker of Aya. He makes a phone call and tells his colleague that his wife got killed.