Strangers in Public, Lovers in Private

At 180 jin, Song Xinya is manipulated by her step-sister and accidentally spends a night with Beijing elite Qin Yuhe. Feeling inferior, she flees, leaving only a coin, before exposing the conspiracy that forced her to gain weight through malicious feeding. For revenge, she loses 80 jin in a year, perfecting her transformation. They unexpectedly meet for a blind date and flash marry, falling in love after marriage. The cold husband gradually succumbs to doting her, while she builds her career and counters her stepmother and step-sister's harassment. Later, they uncover the truth of their past connection, resolve the storm together, and their contractual marriage becomes true love.