Melody Ellison is impressed by her sophisticated new friend, Leah Roth, but she wishes her cousin Val would stop being so standoffish to Leah! Melody meets Leah's grandfather, Dr. Roth, a botanist who escaped the Nazis and brought a rare and valuable Lady's Slipper orchid with him to America. When Melody's own grandfather becomes a suspect in a burglary, Melody turns to Val and Leah for help. Yet Leah seems to be hiding something, something to do with her grandfather, that could hurt all of them. Can Melody catch the orchid thief before it's too late?