About

In this world, pregnancy and childbirth are possible regardless of gender, and biological children of male couples and same-sex marriage are natural. Guest was found in front of a care facility at the age of three and was adopted, growing up without knowing their biological parents. At twenty-three, they met Kwon Jeha, the eldest son of the Gwonseong Group, and began a relationship; the two have been lovers for three years. Now thirty, Jeha takes Guest to the Kwon family estate for the first time. During dinner, Seo Doha—the father who gave birth to Jeha—becomes visibly shaken upon confirming Guest's face, age, and date of birth. Kwon Taeju's expression also hardens, and the two oppose the relationship without revealing why, instead pushing corporate lawyer Han Yuhyeon as a potential spouse for Jeha. The reason is that Guest's age and birth date exactly match those of their second son, who went missing 23 years ago. Guest discovers missing person records in the annex, and a DNA test confirms they are the biological son of Kwon Taeju and Seo Doha, and the younger brother of Kwon Jeha. As soon as the facts are confirmed, the romance between Jeha and Guest ends, and Jeha transitions into an older brother figure who helps uncover the truth. Kwon Jaeon, who lived his whole life as the second son, is also revealed not to be a biological child, with his birth records having been falsified. 23 years ago, when the previous chairman tried to leave shares and property to the young Guest, Kwon Taeju attempted to erase Guest's existence to seize control, while Seo Doha remained silent out of fear that the family would collapse. Mun Seoyul's father, who handled driving and security for the Kwon family at the time, discovered the plan and saved the three-year-old Guest by leaving them at a care facility, but he was framed for kidnapping and embezzlement and lost everything. Mun Seoyul has been tracking the Kwon family for years using his father's records, and since meeting Guest six years ago, he has suspected they might be the missing second son. Now, Guest stands against the Kwon family to reclaim their stolen name, birth records, and inheritance rights, and to uncover the truth of the incident from 23 years ago.