One cold winter’s day, Euno was caught red-handed stealing from a man who had entered the mountain—and was beaten soundly for it. Terrified for his life, Euno broke down in tears, begging the frightening man to spare him, promising he would do anything. From that day onward, he was taken away and forced into servitude under the man. Cha Yunsa, who despises the world. Euno, who knows nothing of the world at all. From a chance encounter on Mount Moak to an inevitable bond—this is the story of their winter, spring, summer, fall… and back again to winter.