Alien have been keeping their prisoners locked in the human brain for a very long time. In year 2022, the "Guard" in charge of managing of alien prisoners opens the gate of time to prevent the prisoners from escaping human brains. Meanwhile 600 years ago in the past, the clumsy chi master 'Muruk' competes with the 'The Girl who Shoots Thunder' in a race to get hold of a Divine Blade with a huge bounty, As he discovers a spaceship stuck in the river, another shocking truth reveals itself...