All Colonel Kang Hajeong wants is to retire peacefully from the Esper & Guide Special Forces, but his plans are ruined when he’s partnered with a powerful new esper named Kim Muhyeok. Worse yet, a sudden ambush cuts his life tragically short… or does it? Waking up in the hospital years later, he finds himself in the body of Sergeant Kang, a different person who happens to share the same name. But that’s not the only mystery to be solved. Strange things are happening at the Esper/Guide center, and his old partner, Kim Muhyeok, still needs his help…