I Exit a Three-Person Marriage Remarry My Best Friend's Older Brother and Fall Madly in Love

Ruan Mi is the devoted wife of Mu Xiubai, a powerful executive in Hai City. For five years, she has sacrificed her career as a film director and her personal identity to support her husband, enduring his emotional neglect and serving as a placeholder while he pursues his first love, Zhou Mei. The story begins at the funeral of Mu Xiubai's father, where Ruan Mi discovers that her husband has been unfaithful with Zhou Mei, who is now pregnant with his child. Shattered by the revelation, Ruan Mi collapses and demands a divorce, but Mu Xiubai refuses, intending to keep her as a nominal wife to maintain his public image and secure business alliances with her influential family.

While hospitalized, Ruan Mi overhears her mother-in-law, Gu Lanying, plotting to render her permanently infertile through continued administration of fertility-enhancing medicine. The scheme aims to allow Zhou Mei's child to be passed off as Ruan Mi's own heir. Realizing the depth of the conspiracy against her, Ruan Mi decisively cuts ties with her husband. She reconnects with her childhood friend and protector, Bo Ye, the ruthless heir to the Bo Group in the capital. Bo Ye, who had previously opposed her marriage to Mu Xiubai, welcomes her back and provides her with legal and financial support.

Ruan Mi returns to the Mu Group to resign and retrieve her personal belongings, including a jade bracelet that was a gift from her late mother. Zhou Mei, now installed as the temporary vice president, steals the bracelet and provokes Ruan Mi into a physical altercation. Mu Xiubai intervenes, not to protect Ruan Mi, but to demand she clean up the mess Zhou Mei made by altering business contracts. He also withholds a jade pendant Ruan Mi gifted him, using it as leverage to prevent the divorce. Humiliated and enraged, Ruan Mi refuses to comply and instead seeks legal recourse through Bo Ye's lawyer, aiming to claim half of the Mu Group's shares.

The conflict escalates when Mu Xiubai, driven by jealousy and possessiveness, attempts to force himself on Ruan Mi, claiming she must fulfill her wifely duties. Ruan Mi fights back, and the incident is interrupted by Zhou Mei. Later, Ruan Mi meets with Bo Ye at a nightclub, where Mu Xiubai and Zhou Mei confront her, accusing her of infidelity. Bo Ye intervenes, punishing Mu Xiubai and his associate for touching his people and disrespecting him in his own establishment. Despite Bo Ye's protection, Mu Xiubai remains obsessed with regaining control over Ruan Mi, refusing to sign the divorce papers and continuing to manipulate her through their shared business and family ties. The story concludes with Ruan Mi firmly establishing her independence, backed by Bo Ye's power, while Mu Xiubai begins to realize the consequences of his arrogance and the depth of his loss.