A man from the modern world suddenly dies and is reincarnated into a fantasy world filled with monsters, magic, dungeons, and adventure. However, there is one major problem. He awakens in the body of a woman named Enjel, an A-Rank adventurer whose fate remains unknown. After realizing that she is inside an underground labyrinth, Enjel discovers a sword, adventuring equipment, and an identification card proving that the body she now inhabits once belonged to an experienced adventurer. Even more surprisingly, she discovers a mysterious system that displays her status, level, EXP, skills, and inventory. Strangely, despite the identity of the body showing an A-Rank adventurer, her level is only Level 1. With limited knowledge of this new world, Enjel begins her journey to survive, defeat monsters, gather EXP, discover hidden treasures, and gradually become stronger.