When the infinity trinity hears of a Nazi spy plot that could bring danget to Chicago, Mae knows they must go to check on her beloved aunts, the daring World War II pilots Willa Brown and Janet Harmon. Mae's Granny Crumpler isn't exactly thrilled about Mae and her friend trying to get involved with something so dangerous--especially when she's already worried about not hearing from Mae's dad, who is serving in Europe and fighting for freedoms on ad...