Ten-year-old Sophie eagerly anticipates a summer of adventure with her daring Grandma Clara, while her brother Leo, 13, remains skeptical. Clara, a retired biologist, takes them on thrilling escapades to famous sites around her hometown with her sidecar motorcycle. Their summer takes a wild turn when they find dinosaur eggs in the legendary "Dragon Hole" cave. Clara recognizes the pulsing life within, leading to a mission to protect the eggs. Once hatched, these dinosaurs display incredible talents-rapid learning or speaking abilities. As Sophie and Leo bond with their new dino friends, they must protect them from those who would exploit them, turning each day into a game of hide-and-seek.