"Queen of Tears" follows the tumultuous life of Hong Hae-In, the heiress of the Queens conglomerate. As the CEO of Queens department store, she is poised to inherit her grandfather's empire. However, her personal life is in shambles, marked by a deteriorating marriage to Baek Hyun-Woo, the company's legal director. Despite their once fairy-tale romance, the couple grows apart, leading Hyun-Woo to seek a divorce due to constant familial disrespect and miscommunication. The plot thickens with the return of Hae-In's ex, Yoon Eun-Sung, who conspires with Man-Dae's mistress, Moh Seul-Hee, to bring down the Queens family. This scheme leads to Hyun-Woo and Hae-In's divorce, but the couple eventually reconnects and fights to reclaim their family's legacy. Hae-In's health issues add another layer of drama, culminating in a dangerous surgery and a temporary memory loss. Despite the challenges, Hae-In and Hyun-Woo rediscover their love and work together to thwart their enemies and restore their family's fortune.