Sixteen years after the original story, Hye-sung and Dojin’s eldest son Byul is a talented high school student with ambitions of becoming an idol. Used to being the center of his family’s attention, Byul struggles when a new baby brother suddenly changes the household he has always known. Between music, school, longtime friends, and a family entering a new chapter, he begins figuring out what growing up means when his once-familiar place in the world is shifting.