Zhu Zhining, the daughter of a wealthy merchant from Jiangnan, moves into the Marquis of Yongding's residence to learn proper etiquette. Upon her arrival, she accidentally offends the young marquis, Pei Yanzhao, and earns the label of someone trying to climb the social ladder. For two years, she treads carefully. After falling into the water during a garden outing, she is rescued by Pei Yanzhao, but it is the quiet bodyguard He Chuan who gently escorts her back. From that moment, she secretly falls for him. She frequently sends food and treats, but everyone in the household mistakenly believes she is deeply in love with Pei Yanzhao. It is not until a fire breaks out at the Chancellor's residence and she breaks down in tears in front of everyone that Pei Yanzhao finally falls for her. Yet on the very night he visits her in a drunken state, the bodyguard who had already set off for the north suddenly returns.