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.

In a room filled with opium smoke, Lee Yeon from 1938 starts after reading a letter. Yeo-hee and Jae-yoo got kidnapped last night. Lee Yeon meets the Chief Commissioner who proposes an exchange deal. Akira informs Hong-joo and Lee Rang that the one hostage who gets to live depends on them. The air is tense as Lee Rang's eyes shake at Hong-joo's words. That's when Lee Yeon bursts into the room...