Su Yiyi, the eldest daughter of the Su family, was publicly called off her engagement with the eldest young master of the Li family at the engagement party. She said on the spot that she would marry no matter who dared to marry her at this moment. When everyone laughed and no one dared to come forward, a small security guard stood up and expressed his willingness to marry her. However, no one knew that this little security guard was Ye Xingchen, the son of the Ye family. Ye Xingchen changed his name to Yan Long and came here to investigate the Su family that was about to be acquired. He did not expect to encounter such a farce. He fell in love with Su Yiyi at first sight and planned to hide his identity and follow Su Yiyi to win her heart step by step. Yan Long protected Su Yiyi with love and responsibility, and also helped the Su family come back to life. Su Yiyi also developed feelings for him in the process of getting along.