Urban explorers Josh and Cody split up for this episode, each chasing a different kind of ruin. In Germany, Josh pushes into a derelict mining complex from the country's industrial past, a trip that gets tense when a police squad turns up mid-exploration. Across the water in England, Cody climbs through a decommissioned Soviet submarine moored in the Medway River, camera tracking through corroded hatches and control rooms left to rust. The pair narrate as they go, pointing out machinery, graffiti, and structural decay while explaining what each site used to be and why it was left behind. There's no historian on camera and no archival footage, just two explorers with handheld cameras working through genuinely abandoned, sometimes restricted, locations. It's the latest entry in their ongoing series tracking down derelict places around the world, and the submarine sequence in particular gives a rare look inside a piece of Cold War hardware nobody maintains anymore.