In this huge city, how many people are running around for a living every day. But how many people are born with a golden key in their mouths, and are destined to have no worries about food and clothing throughout their lives. What I want to tell is a story about two girls who were destined to be completely different from each other at birth. Under the control of fate, they exchanged identities, each found true love, and realized the true meaning of happiness in life.