After losing everything in a war with the all-powerful Queen, Aden is reborn as Han Taemin, an ordinary man who cleans up after hunters in a world ravaged by monsters. But one day, when a disastrous dungeon raid ends with Taemin as the sole survivor, he suddenly awakens and becomes a hunter. With his new abilities and mana training, he starts gathering other hunters who seemingly have strange connections to his past life. Can Taemin save the world in this life and avenge his past self?