Yeon Chungwoon, who had long wished to become an outside disciple of the Wudang Sect, finds himself enduring harsh days after being singled out by his peer, Yoon Sihu, who is the eldest son of the Deokpung Yoon Clan. Suddenly, one day he hears an unexpected voice… Thus begins the strange journey of communication between Yeon Chungwoon, who has gained a connection to the heavens, and the masters who just want to stop working late nights.