When ordinary employee Xu Mingyuan returned home from a business trip, he was suddenly handed a mysterious paper ball, which revealed that his wife, Zhou Si, who had been married to him for three years, was cheating. Xu Mingyuan didn't want to doubt his wife, but the forgotten anniversary and the unusual overtime… Though Zhou Si always gave explanations, his male intuition told him that things were not as simple as they seemed. Zhou Si's once familiar face began to feel more and more unfamiliar…