In Season 18 (projected/upcoming), Episode 5 involves a multi-week challenge where contestants must form alliances and rank each other.
The code typically refers to the fifth episode of an eighteenth season. The most prominent show with this specific numbering is the legendary motoring program Top Gear . Top Gear (UK) - Series 18, Episode 5 [S18E5] Episode #18.5
Season 18, Episode 5, titled "The Serpent's Cove," follows a veteran and a cattle rancher trying to survive 21 days in the Philippine jungle. In Season 18 (projected/upcoming), Episode 5 involves a