Avery, Ella, and Evan love wildlife ... but some wildlife is just wilder than others! In this exciting mystery, these real kids, and new friends, encounter a whole lotta shakin' going on in rattlesnake country! But when that shakin' is coming from an about-to-strike rattlesnake Y-Y-Yikes! Before they know it, the kids are mixed up in an adventurous mystery where clues require them to use their best science, technology, engineering, and math skills to find the answers!