The singing/dancing Angel sisters, Nancy, Bobby, Josie, and Patti, aren't interested in performing together, and this plays havoc with the plans of Pop Angel to buy a soy bean farm. They do accept an offer of ten dollars to sing at a dubious night club on the edge of town where a band led by Happy Marshall is playing.

Teenager Henry Aldrich decides to take matters into his own hands when his high school principal forbids the student band from playing swing music.