On Changchi Island, Wu Xuan Wei and his brother Wang Jie Long, who grew up in an orphanage, have been making money by selling eavesdropping information for many years. Soon, they get involved in a bizarre incident during their collection of another batch of information for selling. Everything goes downhill when Wu Xuan gets accused of kidnapping and murder. The fact that the man suffers from amnesia doesn't make things any easier. Still convinced of his innocence, the man begins his own investigation, which reveals many dark secrets, about people around him, and put his information collecting skills and his own sanity to the test .