Elliot and Ant are work buddies that took a road trip in the summer across the French country side for some fun. On the way they took pit stops at hotels and motels, got food, saw attractions while taking pictures of the fun to document it. During the middle of the trip, it was Ant's turn to drive and he took a wrong turn on the highway. Luckily Elliot guided him to small town a couple miles away for them to rest at called "Échange." When they arrived they parked and started wandered around taking pictures of cool architecture but when they started looking at the people something seemed off. The men & women walking around seemed to have opposite heads.
They asked a local what was the deal with everybody, and he explained that due to a nearby factory owned by a big company the weather started affecting their town making men and woman swap heads with each other at random amongst other things. The local added that it started around when he was a kid so he's used to it at this point and enjoys basically being other people, especially the women. This time around he has the curvy body of his wife's friend's curvy cousin who's visiting. Elliot asked if he could take a picture and the local happily agreed giving him a one of kind photograph to remember.