Six years ago, 24-year-old Ahn Seo-yan had a relationship with 14-year-old Moon So-yeon by chance. Underage Moon So-yeon and her sister Mi-kyung were forcibly sent abroad by Ahn Seo-yeon's father in order to settle the matter.
Moon So-yeon, who was sent to South Korea, was adopted by a Korean family and became a Korean.
Moon So-yeon's brother Moon Soo-hyun in the Korean family is a popular idol star. Moon So-yeon developed a relationship with Moon Soo-hyun during the six years she lived in South Korea. Faced with Moon Soo-hyun's pressing, Moon So-yeon secretly returned to China.
In China, it was An Ruiyan's good friend Jin Can who was entrusted by the United States to receive Moon So-yeon. By some chance, Moon So-yeon ended up living at An Seo-yan's house.
In order to avoid the questioning of her adoptive parents and Moon Soo-hyun's questioning, Moon So-yeon proposed to marry Ahn Seo-yan, who was forced to marry by her family and had no choice but to marry...