When three disparate souls—a doctor desperate to redeem her reputation (Vicki Zhao, RED CLIFF), a policeman who will go to any length to seek out justice (Louis Koo, TRIAD ELECTION), and a criminal with a gunshot wound to the head (Wallace Chung, DRUG WAR)—are thrown together in the hustle and bustle of an emergency room, a hospital descends from a pristine sanctuary to an explosive battleground. Bullets fly in international award-winning director Johnnie To’s (DRUG WAR, EXILED, ELECTION) latest showdown between cops, robbers, and everyone else caught in the crossfire.