"One cold winter day, Euno gets caught red-handed while trying to steal from a man who had entered the mountain. The man is terrifying—dangerous enough to threaten his life—so Euno breaks down in tears, begging to be spared, promising to do anything. From that day on, he's taken by the man and forced into servitude.

Chae Yoon-sa, who harbors a deep hatred for the world, and Euno, who knows nothing about it—two lives, worlds apart. A fateful encounter on Mount Moak that began by chance. This is the story of their winter, spring, summer, fall... and winter once again."