Na Kang In opens his eyes in the middle of South Korea, in 2024. He doesn’t remember who he is or where he is, but he learns from the combat support AI Jeon Ji In, inside his body, that he was a member of the Earth Alliance in 2082. He needs to gather information to regain his memories and find out why he came here… Na Kang In, who has nothing but knows how to do everything, is having a tumultuous time adapting to Earth !