McMurphy befriends a wounded Cambodian, named Seak Yin, that Dodger's patrol brought back who claims that he was pressed into service by the Viet Cong, and she and Dr. Bernard try to intervene when Seak Yin is accused of betraying an ARVN patrol force to the Viet Cong. Meanwhile, a tough, no-nonsense new officer, named Major Melvin P. Otis, arrives to take control of China Beach, much to Lila's dismay, and begins to set his sights on K.C.