Chen Feng, a modern young man, accidentally transmigrates into a Siberian tiger cub on the African savanna and is adopted by a fugitive lioness. He awakens a devour-and-evolve system. With modern tactical thinking and the innate talent of the king of beasts, he climbs up from the bottom of the brutal wilderness. He subjugates saber-toothed tigers, allies with primitive apes, and eventually rules all beasts and primitive tribes, becoming the true king of the savanna.
