Elena, Amy, and Fiona are going on a wartime mission! They must join Rosie the Riveter and other women workers at the Bath Iron Works, a huge shipyard in Bath, Maine. But they're not there to build ships—they're looking for a huge red dragon! They have to be careful not to blow their cover, and to stay on this dangerous dragon's good side. Join the girls as they search for the dragon, outwit evildoers, and learn about the history of the 1940s.