Oh Bom (Song Ji-Eun) and Kang Ma-Roo (Lee Jae-Joon) lost their parents in accidents on the same day. However, a greater suffering is yet to come for both of them. Oh Bom’s past was just the beginning of the tragedy. Taking on her father’s debt, more than 40 thousand dollars, she finds his secret diary about her birth. The diary says she was a missing child and his parents tried to find her real family. She lost her parents twice overnight. Then, her new life full of ups and downs begins with a huge debt.

該劇以繼承父母5000萬韓元負債的主人公艱難曲折的社會生活為主線，講述了一群年輕人冒險衝破青年失業時代的殘酷現實以及受傷、破裂的家庭重新復合的故事。

This drama is about a family that lives on the outskirts of Seoul. Byun Han Soo is the father and His wife, Na Yeong Shil is a dedicated, responsible mother to his three daughters and one son including Hye Yeong, Mi Yeong, Ra Yeong, and Joon Young. Suddenly one day, Ahn Joong Hee shows up at the household and declares that he is the son of the family. Joong Hee is an actor who used to be a member of an idol group. He begins to live with them…

卞家是一個擁有四個子女的大家庭，卞漢秀（金英哲飾）與妻子羅英實（金海淑飾）一起經營著一家小壽司店，二人勤勞努力，因此店裡生意興隆。四個子女均未婚。大兒子卞俊英（閔鎮雄飾）已經準備了五年公務員考試，但屢戰屢敗，屢敗屢戰，他下定決心今年一定要通過考試。大女兒卞惠英（李宥利飾）是一位美貌與智慧並存的律師，十分注意自身形象，追求高品質的生活。二女兒卞美英（鄭素敏飾）一直在找工作，性格溫和善良。老幺卞羅英（柳和榮飾）性格乖張，喜歡漂亮衣服和包包，經常和大姐惠英拌嘴。一家人過著吵鬧但又溫馨的幸福生活。

然而，一輩子只知道勤懇工作、為了家人付出的善良耿直的卞漢秀，卻有著到死為止也不能說出去的秘密，三十多年來，他和妻子一直辛苦地背負著這個秘密，過著小心翼翼的生活。直到有一天，自稱是卞漢秀兒子的藝人安重希（李准飾）的出現打破了這個家的平靜以及卞漢秀和妻子多年來一直想要堅守的秘密。