Dugo is a young man satisfied with living a normal life together with his fellow village men. Unfortunately, he encounters a devastating event in his life as his village has been invaded by the ruthless Buwaya Tribe. When he thought that their village would finally meet its end, a sudden turn of events occurred. Who would have thought that the man who visited their village not long ago, the man they gave shelter and food out of pity, is actually a mysterious man who has unfathomable power. This man let Dugo borrow, no, he buff him with great power thus, enabling him to crush the ruthless invaders.In the end, Dugo learned that this man called himself Mercenary 000.