CHO Eun-ja is the president of Club LaLa, which has been a family business for three generations. It used to be very popular but not any more. The club falls into debt and the creditors are after Cho. Longing for its ‘beautiful old days’, Cho and the other three girls at LaLa try to make the club a hot spot once again, but there is an obstacle: the president of Club Nemo, KIM Geo-man. Kim wants to take over Club LaLa. He lures Cho with a private loan, then snatches away the last popular singer at Club LaLa. Thanks to his scheming, LaLa is really on the verge of bankruptcy. However, where there is a will, there is a way! Cho and the three girls become a singing group named ‘Oh! Lala Sisters’. They get popular after undergoing intense training, but there is still Kim, continuing to try to frustrate the four girls’ dream…
