Saving the future with the past! Lansen, the last prince of the kingdom of Banloa, was destroyed by the invasion of the Empire. He left with the children of his vassals to a distant foreign land, After trying to survive, he became a Sword Master at a young age. However, due to some kind of incident, he lost his power, The people around you are in danger… In order to survive, he uses ancient artifacts to travel back in time to the past 10,000 years ago. With the skill he gained there, he returns to the present and overcomes the crisis. However, the crisis repeats itself, and the main character is forced to travel back in time. In it, the amazing secret intertwined with the present One by one, they begin to be revealed.