One day, a mysterious tower suddenly emerged in the heart of the city. Dubbed a dungeon, it was a perilous domain teeming with treacherous landscapes and fearsome monsters. Yet, within its depths lay untold riches, drawing adventurers eager for fortune and glory. Sejun, an ordinary young man, finds himself unexpectedly invited into the dungeon, dreaming of wealth beyond imagination. However, fate takes a cruel turn, stranding him in a hidden, isolated section of the tower. With nothing but a handful of seeds and his own resilience, Sejun must cultivate the land, gather resources, and devise a survival strategy to endure the unknown.