Drug War(2013)

Manufacturing just fifty grams of meth in China will earn you a death sentence, and Timmy Choi (Louis Koo) has manufactured tons of it. After a violent lab accident, he's in the custody of Captain Zhang (Sun Honglei), and now he has only one chance to avoid execution: turn informant and help Zhang's undercover team take down the powerful cartel he's been cooking for. With the uneasy allies forced to compress months of police work into just 72 sleepless hours, things begin to spin wildly out of control, and it becomes unclear whether the cop or the criminal truly has the upper hand in master director Johnnie To's puzzle box of a crime thriller.