Yeon Woo-hyuk, a veteran of a martial arts mystery game, suddenly finds himself inside the game as a constable. Using his knowledge of in-game cases, he starts solving crimes and adapting to his new role. However, his special ability “Spirit Eye” turns out to be a sign that his energy core has awakened — putting his life at risk. Now, not only must he survive as a constable, but he also has to train in martial arts and become a powerful warrior to stay alive.