Gyeongseong's indigenous gods vanished and died overnight! At Myoyeongak, Lee Yeon tells Hong-joo that he will take the treasures to the Bando Hotel. After a round of fist fights and drinks, Lee Yeon tells Moo-yeong the same thing. Meanwhile, Hong-joo bargains with the Chief Commissioner for the safety of Myoyeongak and her girls... All demons gather at the Bando Hotel to obtain the treasures.

In the painting at Bando Hotel, Room 404, the three mountain gods face Ushiuchibo. At the snap of his finger, Hong-joo and Moo-yeong vomit blood. Lee Yeon searches for an antidote in the woods when he encounters an injured old man. The old man turns out to be Onyudo, a mercenary. As black smoke emerges from his mouth, something unbelievable happens. They switch bodies!

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...