Tang Junyao, a surgeon, is forced by her grandfather's hunger strike to hastily marry Ji Hancheng, the wealthiest man in the imperial capital, whom she has never met, and register their marriage, agreeing to keep it secret and divorce after three months. After Grandpa Tang passes away, Tang Junyao moves into the Ji family home and begins living with the cold and arrogant Ji Hancheng. At first, Ji Hancheng assumes she is a scheming woman after wealth and deliberately makes things difficult for her at every turn. However, Tang Junyao's independent, bold personality and unyielding attitude gradually shatter his prejudices. Her half-sister, Tang Junting, repeatedly schemes to sow discord and frame her, while the Ji family relatives subject her to doubts and difficulties, but Tang Junyao overcomes every challenge one by one. As the two clash at every turn, their fake marriage turns into real love. Ji Hancheng is the first to fall for her, transforming from cold indifference and distance to secretly protecting her.