In which Lee Hyukjae is a dad of nine teenagers, but not in the way you think.

Hyukjae is the thirty-eight year-old concert director and owner of the Performance Dance Studio and father of nine kids.

What had looked like a normal summer vacation turned into something more. The arrival of Hyukjae’s ex-leader, Leeteuk came as a surprise, the invitation for a reunion was even more so.

Eunhyuk was a member of the now-disbanded idol group, Super Junior. He retreated from the limelight and set up a dance studio near the city, where he has been taking care of his kids who are also his students, ever since. So when the opportunity , he didn’t hesitate to take it, wanting to see his ex-bandmates and his fans who had supported all of them even until now when they had separate lives. All except seeing his ex though.

What his ex-members didn't know was that Hyukjae was a different kind of father to the nine kids, and was very content that they assumed he slept around with nine women in the course of four years since he was eighteen.

It wasn't a good thing for his ex, Donghae, who assumed he has cheated on him as they were together since they were twenty.

But his kids are hell bent in making their Appa find love with him again with the help of Kim Heechul, because messing with their Appa's ex is half the fun. Oh! And becoming idols like their father along the way.