The episode was written by Ben Karlin based on a story by Danny Zuker and it was directed by Alisa Statman.
Phil (Ty Burrell) gets a new RV after selling a house and he wants to go to Yellowstone National Park for the summer, so he takes everyone on a test-drive just to get a taste of what the trip will be like.
Claire (Julie Bowen) believes that the trip with an RV is not a good idea because she knows that having all the kids together in the same place can easily turn into a disaster.
In the meantime, Manny (Rico Rodriguez) tries to find his backpack that he thinks he has left in Luke's (Nolan Gould) room.
Capitalizing on the situation, Gloria and Jay end up snooping through Phil and Claire's stuff, something that they also do later at Mitch (Jesse Tyler Ferguson) and Cameron's (Eric Stonestreet) house once Manny remembers that his backpack is not in Luke's room but at Mitch and Cam's house instead.