The End of the Overworld! (Minecraft Stonesword Saga #6)

"In their last adventure, Morgan, Harper, and their friends barely survived a dangerous game only to return to a Minecraft Overworld in total chaos! The rift that's been growing steadily larger in the sky is now on the verge of consuming everything in its path. The team has one chance to save Minecraft and their friend the Evoker King--but it may already be too late"--