Hens are working in the "Flockheed Eggcraft Factory", laying eggs for the war effort until they get distracted by a rooster singing like
Frank Sinatra. Porky, the supervisor, rushes to investigate. Soon, he's auditioning for a new crooner; among those showing up are caricatures of
Al Jolson, 'Jimmy Durante' and
Cab Calloway. He evetually gets to a
Bing Crosby clone, who introduces himself as "The Old Groaner". Between the two of them, egg production is soon more than he can handle.
—Jon Reeves <jreeves@imdb.com>