Jaejoong, Seohyun, and Naeun are siblings that came from a happy middle class family. Though the picture of their happy life shattered when their parents died on a car crashed. When their parents died their relatives felt sympathetic to them, though even with this feelings no one wants to adopt the three as a whole, but adopt them separately because of financial issues. As their family members are having a meeting on who would adopt who, Jaejoong accidentally heard them. Jaejoong hearing their terrible fate of being seperated, he hurriedly and quietly get his two sisters and run away from their relatives. The only things the three has our their piggy banks and some clothes so that night given no choice they spend it in a Sauna House. With the mindset of keeping his sisters alived at a young age he took various part time jobs to pay for his and her sister's school fees and to earn money for food and rent.