People binge eat and suffer from extreme thirst, which leads them to go crazy for water. They cannot control themselves because they are brainwashed by a parasite.
Deranged (Korean: 연가시) is a 2012 South Korean medical disaster thriller film starring Kim Myung-min, Kim Dong-wan, Moon Jeong-hee and Lee Hanee. It is Korea's first medical thriller on an infectious disease epidemic. The film was directed by Park Jung-woo and produced by Lim Ji-young and Oz One Film. Distributed by CJ E&M, the film was released on July 5, 2012, and runs at 109 minutes.