Before Cheng Shinian studied abroad, he accidentally had a one-night stand with Si Beiyuan. Six years later, Cheng Shinian took his son back to China and became Si Beiyuan's secretary, and learned that he already had a fiancée.After careful consideration, Cheng Shinian decided to marry Si Beiyuan, but found out that Si Beiyuan's fiancée was none other than his best friend Qiao Ruo'an who had assumed his identity...