The game takes place in a wasteland 15 years after the eruption of a volcano. Humans manage to maintain the delicate balance that defines peaceful coexistence with dinosaurs on Earth. It is in this world that the main character Ron has to live and work as a food deliveryman. One day, he delivers food to Professor Kane, but before he can ring the bell at Kane's house, a Spinosaurus bursts out. The deliveryman miraculously manages to escape, but unfortunately, Kane is dead. Ron finds a folder with Kane's papers near the house. Ron realizes that Kane has managed to find a way to bring all the dinosaurs back to the island of Isla. To do this, you need to find 5 stones and put them around the obelisk, and then the power of the obelisk will summon all the dinosaurs to return to the island.