Wynne Young, daughter of a wealthy merchant in her past life, marries scholar Ian Shaw—only to be betrayed by him and his mistress Yara Lynn, framed for adultery and drowned with her family fortune stolen. Reborn on her wedding night, she swears vengeance. Secretly swapping Shaw's tonic with a sterility poison, she gains the support of nobleman Xander Vance by presenting him a prized medical manuscript. During her mother-in-law's birthday celebration, Shaw's attempt to frame her backfires catastrophically: Yara is exposed as pregnant out of wedlock, and Shaw is left infertile—his bloodline ended by his own poisoned cup.