LOS ANGELES—Teasing the premiere as the show’s most daring experiment yet, a trailer for Naked And Afraid revealed Thursday that the new season of the reality series was shot within the confines of the last 3-square-foot patch of nature. “Two contestants will face the ultimate challenge, attempting to survive for seven days and seven nights without food, water, or clothes on the only remaining plot of vegetation on the planet,” a voiceover in the trailer said as dramatic footage showed two naked people attempt to eat, sleep, and hunt on a roadside median while cars, bikes, and pedestrians swerved around them. “This time, we won’t be dropping contestants in the Amazon rainforest or the African savanna. Instead, they’ll be forced to survive on all that is left of nature: a small patch of grass in downtown Cincinnati.” The trailer, which notes that the new season will be the show’s last, concludes with a dramatic cliffhanger in which both contestants are confronted by police and arrested for public indecency.