It's hard being a single father, especially when you have five boys who are anything but little angels. Kris has gotten over the death of his wife, but he still hasn't gotten used to taking care of his sons on his own. Xiumin, responsible Da-Ge who has better control over the kids than Kris. Lay, who is an introvert and is taking on the effects of puberty badly. Luhan, the smart yet mischievous ten year old who frequently uses his younger brothers as guinea pig