Koda-sensei and Satsukawa make a medical breakthrough. Naohiro develops a shocking new skill. New evidence shows that Ohmori and Machiruda are plotting something in secret. With zombie sightings on the rise, Shinsuke and Okawa are busier than ever, prompting Shinsuke to beg Tachibana to return. The office is called to put a stop to "Bolt"'s reign of terror in the city.