On a thunderstorm night, the zoo fence collapsed. Breeder Lin Chuan took a risk to rescue the trapped tiger cub, but was sent 150 million years ago by a piece of mysterious amber. There are no medicines, no weapons, and no truly safe place. There are only hunters lurking by the water, giant beasts that move like mountains when migrating, and a system that only translates animal emotions but is never responsible for saving lives. Until a little dinosaur covered in blood came to him with the first words: "Don't eat me." From surviving alone to rescuing injured animals, from temporary caves to prehistoric shelters, more and more injured and stray dinosaurs came to Lin Chuan. If others come to the Jurassic Period, they may want to conquer the giant beasts. Lin Chuan only wanted to build a zoo without iron cages. Here, animals are neither exhibits nor tools. They can leave at any time.