 Sexy, wisecracking nightclub singer Sugarpuss O Shea is a hot tomato who needs to be kept on ice: mobster boyfriend Joe Lilac is suspected of murder and Sugarpuss  testimony could put him away. Naive Professor Bertram Potts meets Miss O Shea while researching an article on slang and in true romantic comedy fashion the two worlds collide. When Miss O Shea hides out with Potts and his fellow professors, everyone learns something new: the professors how to cha-cha and Potts the meaning of "yum-yum"!