​To save her adoptive brother from a life-threatening medical debt, Cynthia Thorne agreed to a faceless, nameless transaction: one night in pitch darkness as a substitute surrogate for the blind, ruthlessly powerful tech tycoon, Dominic Lancaster. Believing her mission was complete after delivering a healthy baby boy to the Lancaster family, Cynthia fled abroad—completely unaware she was pregnant with a secret second child.​Six years later, Dominic’s sight has been miraculously restored through cutting-edge technology, and he is a cynical, cold CEO fiercely hunting for the mysterious woman from his past. When Cynthia returns to Veridian Crest under the alias Chloe Bennett to work as the private live-in tutor for his brilliant but selective-mute son, Leo, she brings her own secret son, Toby, with her.​Toby and Leo are identical twins, completely unaware of each other's existence until they cross paths in the sprawling Lancaster mansion. As the two genius boys decide to secretly swap places, Dominic finds himself inexplicably drawn to the quiet, sharp-witted new tutor. But with rival corporate empires watching his every move and Dominic's sight fully restored, how long can Cynthia hide the truth when his eyes finally lock onto the child who carries his exact gaze?