When an adventurer named Luther runs off with the very last emerald in the world, Lyra has no choice but to chase after him. The world is so much bigger and scarier than she realized!

Delusional skeletons, sneaky endermen, and dangerous adventurers all stand in her path. Will she be able to find the emerald in time to save her village? Maybe the worst villager could be a pretty good adventurer after all.