Jin Taekyung has spent ten years stuck as an F-rank Hunter in modern Korea, scraping by at the bottom of the profession. Then he brings home a battered training capsule, the ARK-2020, and wakes inside the martial-arts world of Murim, in the body of another Jin Taekyung, the disgraced third son of the Taiyuan Jin family. Game panels and quests appear in front of him, so he treats Murim as a run to clear, grinding through duels to grow stronger and carrying what he learns back to the dungeons at home.