Step up 3 does underground the French way, in Paris. Moose (Adam Sevani) misses his flight home after competing in an International Dance Competition for Maryland School of Arts. With the rest if his team on their way home he befriends an American and a beautiful French sophisticate. They introduce him to the Parisian underground dance scene. Moose shows them his moves and impresses them with his unique style. When their routine for an underground dance competition gets stolen by rivals, Moose turns to his school friends for help. Will the last-minute routine be any good?