Pete the Pebble is freed from a glacier and sets out with Carol the Crow to explore the world. As they travel, they encounter a koala, giraffe, sloths, and a polar bear, all victims of climate devastation. Pete invites them to join his journey back to his valley, promising safety. However, upon their return, they discover that even Pete's Valley isn't immune to the effects of global warming, leaving them to face an uncertain future together. The story highlights the importance of resilience, friendship, and the urgent need to address environmental challenges.