Bonnie, who hopes to get a job at a summer camp, puts aside her own problems when she finds out, from a snapshot, that her sister Lorraine's new boyfriend is a beatnik. To make this beatnik beat it in a hurry, she and Thad and some young friends rig themselves up as "beats." They hope to show Lorraine how ridiculous such characters really are. But Warren, a likable college senior and not at all "beat," finds out about the plan and arrives as a beatnik who is the most: like crazy, man, crazy. Lorraine, a party to the scheme, pretends to dig his style.
As Warren beats the bongos and Lorraine declaims wild poetry, Bonnie and her hep cats are filled with dismay. In the midst of the confusion Miss Tracy arrives to interview Bonnie about the camp job, but leaves in anger. it is Warren who saves the situation. Bonnie now realizes that Lorraine is in love with a regular fellow, and everyone makes him welcome.