32 fan-favorite alumni from Real World and Are You the One? will head to Spain to finally answer the question: Who's better? The two teams will compete in numerous challenges which are followed by elimination rounds known as the Shrine. During the challenges, the winning team would earn $20,000 in their individual team bank accounts. The best performing guy and girl will earn the "Idol". The Idol winners from each team will choose two players (one male, one female) from the opposing team to go into the Shrine. In the Shrine, the guys will go against the guys, and the girls will go against the girls. The player that wins the Inferno will join their team, while the loser is eliminated.
In the final challenge, the two teams will race to the finish line. The winner will add $140,000 to their team bank accounts, and second place adds $10,000 to their team bank accounts.