A business elite, Ouquan is certain that his wife’s newborn is not his own. With suspicions of an affair, Ouquan starts probing for the truth, only to be caught up in a series of accidents and discovers himself to be the target of an assassinator (Wallace Huo), who is on the prowl for revenge against Ouquan and will stop at nothing to re-gain what he has lost. Unbeknownst to him, Ouquan is also under investigation by a detective (Simon Yam). In this high-IQ criminal detective mystery, everyone has secrets they keep hidden, even from their loved ones. Qiu Yue is a retired policeman who is courageous and eager to help people. Xie Tianyou is a smart, cunning, low-key and cautious computer hacker. The two work together to create a formidable team.