Hyosung is a single mother who would do anything to protect her 2 twin children. Her family doesn't support her anymore after getting pregnant. The father of her children doesn't even know they exist and she must keep it that way if she wants her children to live. But what happens when one of her children meets their father? She even finds herself falling in love with their father again. Everything changes and the twins lives are at stake. What will Hyosung do in order to protect her children? 

Aleyna & Daniel are twins. They're cheerful children who love to play. They're 5 years old and they love their mother. But what happens when the children's curiousty about their father leads them to danger?