Four months after Lee Rang’s death, Lee Yeon resumes to be the nine-tailed fox on the condition that Lee Rang reincarnates. Meanwhile, an uninvited guest steals the guardian stone, and disappears "into the cabinet." Lee Yeon jumps into the cabinet and finds himself standing in Gyeongseong in the year 1938. He then encounters Lee Rang, who immediately just charges at his brother, yelling "Die!"

After saving Lee Rang, Lee Yeon fails to return to the present, so he visits Taluipa of the 1930s, who asks him to work for her until the Gate of Time reopens. Under Taluipa's orders, both brothers board a train to find the Legendary Pipe. Inside the train is a woman who prepares to greet Lee Yeon, Shinju who devises an escape plan, and an hourglass that indicates the approaching overpass.