The three remaining families participate in an epic water slide challenge, and the winning family is allowed to spend a day outside the wall while the other two families stay behind and worry about their fate. After one family is kicked out of the neighborhood, the final two families face off in the last neighborhood challenge — and the biggest challenge yet. The winners of the challenge host a block party for all of the families. Then, at the final neighborhood election, all family members who have been kicked out of the neighborhood each cast a ballot to determine which family will win the $250,000 grand prize. Who will it be? Will the friendships tested during the competition survive outside the wall?