

ER doctor Kate Reed believes she has a loving marriage—until one phone call shatters the illusion. While she's in surgery, her husband Mason Fadley claims his flight is canceled, but he's secretly with his sister-in-law, Sandy Young. When Mason collapses from expired drugs, Kate uncovers the affair—and learns her miscarriage was their doing. On Sandy's wedding day, Kate doesn't arrive to celebrate. She comes to expose their sins.

Hidden genius doctor Damian Mercer (alias Umbra) disguises himself as a beggar to evade global pursuit, only to receive a black card as charity from heiress Liana Lowell. He diagnoses her terminal "Yin-collapsed meridians," but three renowned doctors dismiss him.After publicly humiliating the trio, Damian is forcibly brought to the Lowell estate, where his golden needle technique saves Liana's life, shocking the medical world. Upon escaping, he's publicly humiliated by his fiancee Molly Sawyer and half-brother Rowan Mercer, who break off their engagement. He also discovers the Mercer family has grown arrogant after gaining a seat among "the Twelve Ascendant Elders of the Sanctum" through Damian's own subordinate, Left Sentinel of the Sanctum. Damian secretly orchestrates his revenge, announcing as "Umbra" that he'll attend the Mercer family wedding—causing a sensation.

Tracie Reed grows up in a family that favors boys over girls, with parents who neglect her and only want to take from her. Her only source of warmth is her grandmother. During college, she receives help multiple times from Mason Walker, who secretly admires her. Due to severe nearsightedness and inability to afford glasses, she never clearly sees what Mason looks like. When they meet again years later, Tracie doesn't recognize him as Mason. To save her grandmother, Tracie schemes to trick Mason, but he turns the tables and draws her into his life instead.