A top paleontologist is reincarnated into the Cretaceous period as a weak, tiny lizard and is instantly abandoned by his T-Rex parents. Survival seems impossible until the golden sigil on his forehead activates a divine "devour and evolve" power. Along the way, he rescues two baby T-Rexes, Friday and Saturday, who imprint on him and become his fiercely loyal sidekicks.
By devouring prey, the tiny lizard continuously breaks his genetic limits, eventually evolving into a colossal, winged Dragon God, while his two T-Rex brothers mature into titanic apex predators. When a cataclysmic meteor threatens absolute mass extinction, he unleashes all his accumulated energy to shatter the meteor and save the prehistoric era. Though drained back into a tiny lizard, he reigns supreme as the undisputed king of the Cretaceous, guarded by his T-Rex brothers and worshipped by every beast on Earth.