The world is ending. Massive earthquakes split the ground apart. Mountains collapse. Entire forests disappear overnight. Bakugo and his tribe are forced to abandon their cave and travel across the dangerous world in search of a new home. Everything is going according to plan— Until they find a baby. A tiny cave baby. Alone. In the middle of a disaster. Now the journey to save their tribe becomes something much bigger. Because somehow the angriest hunter in the world has become responsible for the smallest human alive.