Hazama and Okamoto, along with other interns, are in Chicago to observe the surgeries of Dr. Risenberg, a renowned expert. They encounter Okamoto's old friend Tiara and her friend, the civil rights activist Johnny Bassett. Later, two Black Power activists attempt to recruit Johnny into their cause, but he remains committed to nonviolence. Johnny is beaten up while Tiara is accidentally shot. They are both brought to the hospital where Risenberg operates on Johnny's fractured arm, assisted by Hazama and Okamoto. After the surgery, Hazama diagnoses Johnny with congenital analgesia—based on his delayed reaction to his injury, and his reputation of tolerating police beatings during protests. However, Tiara reveals that Johnny could feel pain back when he was younger. Hazama offers to research for a proper diagnosis and possible cure within his three remaining days in Chicago, to which Johnny stubbornly acquiesces. Meanwhile, Yabu and his patient Tommy Williams arrive in Chicago.