The Legend of the Leopard Head King: A Detailed Introduction to the Plot. The protagonist of the story is Gu Yin, a warrior with a leopard head, who cannot even remember his own birthplace. Set in an imaginary world and era, centered around him, scenes of life and death are played out one by one. In this grand background setting akin to "Romance of the Three Kingdoms", the continuous wars, strategies, and rise and fall of nations are turning according to the gears of fate. Among them, various ambitions, delusions, friendships, farewells, and romances intertwine among the characters from the royal court to the common people, forming a grand drama of intertwined emotions of love and hate.