A modern researcher who is suppressed by his boss. After a fight, both of them are transported to ancient times. The researcher becomes the son of the prime minister of a great empire, a spoiled young man who knows nothing but pleasure. Meanwhile, the boss uses modern knowledge to create advanced weapons and threatens the empress. The researcher's family gets caught in the crossfire. At the critical moment, the researcher discovers he can travel back to the modern world, launching an overpowered life...