A new student is taking over Mythic Prep. Rusty is the first robot at the school, and the students are amazed by him. In fact, they seem to be completely under his control. However, Elly isn't impressed. The spunky woodland elf follows her instincts--and Rusty--and discovers what that robot is really up to. Is it already too late, or can Elly save the school from Rusty? As the adventure unfolds, striving readers practice decoding words featuring y as a vowel, as well as common suffixes. Every Spark Decodables book serves older readers who need practice with foundational literacy skills, combining multiple aspects of the Science of Reading to support small group instruction, independent reading, and reading practice at home.