In Prague Of Czechoslovakia, there is a triad organization. Arlumit which is in fierce discrepancy between the Conservative party and the Reform party regarding on the new heir of the organization. Karon, Leia and Behr, the merciless killers, are hired by the Conservative party and the Reform party to root each other out. Karon and Leia of the Reform party are ordered to kill the computer expert and Behr of the Conservative part. At the moment, Leia realized that Behr is her first love when they were young. She doesn't have the heart to shoot Behr. Karon is so disappointed and try to get rid of Behr on his own and get into the point of no return...
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.
