Ji-eun, miembro del grupo de baile de Corea del Norte e hija del líder norcoreano, escapa al Sur después de una de sus actuaciones. Ansioso por explorar la vida liberal en Seúl, Ji-eun busca una nueva vida de libertad en Corea del Sur. Pronto se encuentra con Joon-ho, líder de una banda de rock local. Su relación luego toma giros inesperados a medida que se acercan el uno al otro. Mientras tanto, la agencia de inteligencia de Corea del Sur se entera de una conspiración orquestada por la CIA estadounidense para perturbar la paz en la península de Corea; la CIA planea secuestrar en secreto a Ji-eun. Las fuerzas secretas del Norte y del Sur aceptan a regañadientes trabajar juntas para evitar una posible guerra entre sus dos países.
Cho Eun-ja is the president of Club LaLa, which has been a family business for three generations. It used to be a very popular club but not anymore. Now the club is in heavy debt to Eun-ja. To bring back the old days of glory, Eun-ja tries desperately to keep the club afloat while the owner of Club Nemo wants to take over LaLa. Club Nemo is also a family business and the KIMs have been rivals with the Chos. KIM wants to put an end to their rivalry by buying LaLa and building a department store. So he sets traps to force Eun-ja to sell the club. He first makes Eun-ja take out a private loan and, he snatches the only popular singer and last hope of LaLa. LaLa is thrown in a state of turmoil as it ends up on the verge of bankruptcy. As the last resort to save the club, the four girls decide to stand on the stage themselves as a dancing group named "Oh! LaLa Sisters". Thanks to their fabulous performances, they finally become popular.
