Lu Chuan was ordered to go down the mountain to call off an engagement. On the very first day entering the city, because of a soft-shelled turtle that was hit and killed, he chased after Gu Qingyan's luxury car. Through a twist of fate, he became Gu Qingyan's private bodyguard. Facing wealthy family forced marriages, commercial suppression, and one danger after another, Lu Chuan stepped in time and again to protect her safety. As the forces behind the scenes gradually surfaced, Lu Chuan's identity, which had been hidden for many years, was also peeled back layer by layer. Gu Qingyan then discovered that this seemingly lazy and ordinary bodyguard beside her was far more extraordinary than anyone imagined. And the engagement that was originally agreed to end quietly changed amidst the two getting along day and night.