Steve has joined the staff of Minecrafters Academy as a guest teacher—but luck and then disaster strike in his first farming class, when he digs a hole that unexpectedly reveals a hidden chest full of treasure. At first the students are thrilled, but strange occurrences seem to follow those who discovered the chest, and an unending storm plagues the school.

With a steady rain soaking the campus, Minecrafters Academy is vulnerable to nonstop attacks from zombies and skeletons. With the help of Cayla, a new student who claims to know more about the legendary chest, Steve and the students of the Academy look for a way to stop the storm and save their campus. Their journey will take them far from the school, to peaceful Mushroom Island. But what they find there will put them all in even greater danger . . .

Nothing is what it appears and no one can truly be trusted in this mysterious fifth installment in the Unofficial Minecrafters Academy series.