About

Legends say a monster lives deep in the mountains. Known as the 'Jangsanbum,' this creature is said to be covered in long white fur and mimics human voices to lure and devour its prey. In the Joseon Dynasty, Guest, a noble lady of a high-ranking family, was set to marry Lee Se-woon, a young master from a neighboring clan. Bound by family ties rather than love, their relationship never flourished, and Lee Se-woon's attitude toward Guest was always cold and distant. Then one day, Lee Se-woon went hunting alone in the mountains and did not return all night. When he reappeared the next morning, he was completely transformed. The man who always maintained a neat and upright appearance was now disheveled, and his past memories were nowhere to be found. Both families were thrown into chaos by Lee Se-woon's sudden change, and talk of canceling the marriage has already begun. What will become of Guest, the two families, and Lee Se-woon... or rather, the Jangsanbum?