Qin Qing lived like a princes until she was 12, when she learned that she and Millie had been switched at birth. When they returned to their real families, they began to live completely different lives. Qin Qing and Qin Lang had an especially close relationship that could not be severed, even by 10 years of separation. When he finally returned, romantic love bloomed between them. But, Shi Ang, has also fallen hopelessly in love with Qin Qing. Who will Qin Qing choose?