Su Wan never thought that the million-dollar debt left by her father would force her to sign a three-year "substitute contract." The man on the other end of the contract, Lu Shiyan, is a top music producer in the industry. He is cold and dignified, but he has an inexplicable obsession with her - just because her profile looks like his Bai Yueguang who is far away abroad. Even the slight tremble in his voice when he speaks coincides with the person in his memory.
In order to pay off the debt, Su Wan was forced to act as a "shadow", move into his villa, accompany him to business dinners, and even imitate the woman's handwriting to write notes to him. But she didn't know that Lu Shiyan's Bai Yueguang had "passed away unexpectedly" long ago, and she was not only Bai Yueguang's substitute, but also a "fake" of another person - the female singer who had a problem with Lu Shiyan and disappeared mysteriously.
Her long-distance boyfriend Gu Yan was her only light in the darkness. But as her entanglement with Lu Shiyan deepened, Gu Yan's phone calls became fewer and fewer, and the suspicion in her tone became more and more serious. When Su Wan discovered signs of tampering on Bai Yueguang's "death certificate" in Lu Shiyan's study, and saw a comparison photo of herself and the missing female singer on his phone, she was shocked to realize that this "debt repayment with one's body" transaction was simply an elaborate scam.
What secrets are hidden behind the contract? Is there another secret behind Bai Yueguang's death? Will she, this "double substitute", eventually become a pawn, or can she tear through the fog and find her own way to survive?
