During the Three Kingdoms era, Lu Bu, a renowned general also known as Ryofu Housen, and his friend Chen Gong, or Chinkyuu, unexpectedly end up on Earth. They find themselves reborn as primary school children with no memory of their previous power and prestige. Determined to regain their former glory, they set out on a quest to battle old foes and colossal creatures. However, their childlike bodies and overwhelming desire for women, particularly their teacher Eri-sensei and her ample F-cup bust, poses a significant challenge to their goals.