In computer games, high school student Jack Bronson is an invincible hero, able to fight off any enemy. But in reality, he prefers to avoid enemies, so he considers himself a coward. One day the owner of a local antique shop, where Jack has a part-time job after school, gives the boy an ancient Chinese chest, from which two fabulous guests emerge in the middle of the night: Princess Sulin and her protector, the imperial guard Zhao. The princess needs refuge from the enemies who poisoned her father and seized the throne. The high school student does not have time to protect the princess, so he follows the girl and her captors to fabulous ancient China.