"You were a debt my family paid with a single night, Mr. Sterling. Please, haven't you taken enough?" ​Elara Vance was the "invisible" daughter, the one who stayed in the shadows so her beautiful stepsister could shine. When her father’s company faced bankruptcy, she was drugged and sent to the bed of Silas Sterling the ruthless "God of Finance" as a sacrificial pawn. Silas, believing Elara was a calculating temptress who had recorded their night for blackmail, treated her with nothing but freezing contempt. ​The next morning, she was disowned by her family for "seducing her sister's fiancé" and thrown onto the streets with nothing but the clothes on her back and a check Silas had torn into pieces. ​For five years, Elara lived a life of unbearable hardship. She worked three menial jobs, her once-delicate hands scarred by harsh chemicals, all to provide for her son, Noah, a child who had Silas’s eyes but none of his cruelty. She endured the mockery of a society that called her a "fallen woman" and a family that continued to sabotage her every attempt at a fresh start. ​When Silas Sterling finally finds her, he expects to see a greedy socialite living off his money. Instead, he finds a woman who flinches at his shadow, living in a cramped attic, shielding a small boy who has never known a father's love. ​Silas wants to claim his heir. But Elara has already learned to survive without a heart. This time, it’s his turn to learn the meaning of agony.