The Sizzling Six is a group of teenage girls who have solved every eco mystery thrown their way. In their newest adventure, monarch butterflies are in grave danger! The town of Mortaburg, Alabama, is threatening to destroy an important local haven for these beautiful insects on their long migration south. The Sizzling Six are in a race against meddling city officials, and the weather itself, to save the endangered monarchs. With the help of a mysterious neighbor and a school project, they may be able to turn things around after all.