In this action-packed Minecraft adventure novel, a young girl must help her friend track down his missing uncle, who mysteriously disappeared from the Overworld years ago. Using his beloved uncle's journal as a guide, the duo must leave the safety of the Overworld and traverse the treacherous and unknown landscapes of the Nether and the End, where they meet new friends along the way, and take on dangerous new foes like ghasts and Endermen to reunite this fractured family.