Behind the scenes are small movie clips that show how the photos become the ones you see at the website and what happens under a photo shoot behind the scenes.
There is a lot of preparation going on before a photo shoot and often many people involved. There are often no luxuriant conditions on the set for the models, but it depends on the set, of course. If its on location and not in a studio you have to manage under the condition you got.
It can be a challenge sometimes, but also funny.