While World War II rages, the Bugle sisters turn their Grandpa Buddy's Seaside Hotel into a canteen where sailors and soldiers can relax. Not only do the girls want to help the war effort, but they want to save the Seaside from the hands of a ruthless businessman, Skylar Schutt, who intends to buy it for back taxes. But when Schutt accuses Grandpa Buddy of being a German spy, the girls - with a little help from the Ladies' League for Coastal Defense - declare all-out war! And it isn't long before a platoon of spies surfaces! It seems everybody becomes suspicious of everyone else until a nighttime reconnaissance mission traps the real traitor. Terrific songs, many patriotic, many humorous, and many with that upbeat harmonizing unique to that wonderful bygone era, make this a fantastic show! (Non-musical version is "Star-Spangled Canteen.")