SM has set up EXO with a reality show where they take a road trip. The boys are all put into trios-- Luhan, Xiumin, and Chanyeol start their amazing American drive in Missouri, where Luhan and Xiumin will get to know each other a lot better in the city of St. Louis. Once they leave the urban area, however, they will face tons of rural misadventures. Their goal is Chicago, which is 500 miles away. Will they arrive at their destination as lovers, or will their attempts at romance pull them apart and ruin their friendship?

Meanwhile, Luhan's part-time boyfriend, Sehun, and Baekhyun are taking a road trip from Indianapolis to Detroit. Of course, the boys will get lost and end up in Illinois, crossing paths with Xiuhan and Chanyeol. But Baekse are not alone. SM has made their third traveling companion Justin Bieber, a Canadian music star. They all get upset that SM is trying to replace Kris with the Biebs. Comedy ensues.