Park Jin Young or for short,JYP,has been known as one of the famous entertainer,actor and CEO of his own entertainment company called JYP.   He have everything in his hands. Fame,Talents and Charisma-- (?).   But everything changes when he became a father of 9 children.  

Im Nayeon,a famous narcissistic  actress. Chou Tzuyu,the mysterious savage and blunt young professor.  Two person Two different personalities    What will happen?    

Kim Dahyun, a lovely sister of Kim Taehyung, a loyal friend to Son Chaeyoung and a prodigy when it comes to piano who then stops playing one after an incident. Tzuyu, the adopted child of Park family, quiet and reserved. A girl who loves listening to music. One incident lead them to meet each other. What will happen?