Hwang Stephanie is estatic. Kim Taeyeon is judging a singing and dancing competition, and she's coming to her school! How will she fair against the other contestants? Will she get the chance to shine? What will become of her? Featuring: TaeNy, also starring Jessica, Sunny, Hyoyeon, Sooyoung, Seohyun, Yoona, and Yuri, as well as Krystal from Fx.