To fulfill her adoptive mother's dying wish, she hid all her sharpness and returned to the Gu family to be an ordinary girl. Little did she know that as soon as she stepped through the door, she would be targeted everywhere by the adopted daughter and even despised as "incapable of taking on heavy responsibilities"! Calmly defusing crises, she unexpectedly saved the elder of the Huo family, catching the eye of the decisive Second Master Huo. When an annulment turns into a fake engagement, the aloof divine doctor meets the unfathomable helm of the Huo family, and the two go from probing each other to breaking the deadlock together. He backs her up with shares, and she protects him with her life to repay his true feelings. But when the truth is exposed and crisis strikes, can this engagement starting from a transaction really become true?