Su Jishi, a female doctor who made her way through the world with a geological hammer, had to "take over her sister's job" by mistake and had to act as a female artist. In addition to the endless "unexpected things" in her career, what bothered her most was the fulfillment of the "couple contract" with "Party A" - Mu Xiulun, the president of EXP Mining Group. On the other hand, Mu Xiulun, who originally only wanted to deal with his mother's urging to get married, began to have a good impression of this independent and cool girl. But at this time, Mu Xiulun discovered the secret of Su Jishi's identity. How will this evenly matched love story that started with a lie end?