 Early rehearsals prove to be disastrous, but encouraged by Joanna, and determined to shine in the limelight one more time, the group steadily improves.On the night of the dance, they are unexpectedly joined by double bass player Madeleine (Caron), who had left the band to join the French Resistance and finally was tracked down by Joanna.Gwen arrives just in time, and the Blond Bombshells bring down the house.