Ling is a 40 year old, self assured Chief inspector of Police. He has a perfect family- a beautiful wife, a charming son and posh life style. His perfect life takes an abrupt turn when he wakes up after fainting in a dilapidated building, on one of his operations. He wakes to discover his short term memory damaged, and is more shocked to find his best colleague killed in the same building. He must catch the killer at all costs and to avenge his friend’s death. But as Ling sift through the clues of the murders, he finds that all the evidences are pointing toward himself as the murderer. The deeper he tries to dig into the truth, the more suspicious he becomes.