Gu Nan has been told by his adoptive parents that he has a "hidden disease" since he can remember, and his diet has been limited to light rice and noodles all year round. Until she came to visit with her boyfriend Zhou Yang, a home-cooked meal broke the "taboo" that had been in place for many years. Following the suspicion, she found out that the special mark on her calf caused her to have an indissoluble bond with her boyfriend's adoptive mother. Behind the years of "special care" given by her adoptive parents, there was hidden selfishness, and they even regarded her happiness as a bargaining chip. The truth gradually became clear with the support of medical evidence. Gu Nan broke free from the shackles, regained his blood and family ties, and joined hands with his beloved to head for a warm future of his own.
