Modern youth Chen Feng unexpectedly transmigrated into an Amur tiger cub in the African savanna, was adopted by an exiled lioness, and awakened the devouring evolution system. Relying on his modern tactical thinking and the talent of the king of beasts, he fought his way up from the bottom of the law-of-the-jungle wasteland, subdued saber-toothed tigers, allied with primitive apes, and ultimately ruled over all beasts and primitive civilization, becoming the true king of the grassland.