I am a Pie - an outline

Four IT consultants are given an "away mission" to an out-in-the-sticks office, involving a roadtrip which goes across a desert.
Although the town they have been posted to seems completely boringly normal, things are not quite as they seem.
The culture shock that awaits them terrifies, alienates and makes the four of them overpoweringly paranoid.
The people of the town are otherworldy, with traditions that rub totally against the grain of anything they have ever witnessed.
The physics and mechanics of the town are also beyond their understanding, with strange space and time anomalies happening with frequent and horrifying frequency.
The four out-of-towners fear for their sanity and their lives.

With suicide seemingly the only option for one of the group, the quartet are forced to take stock of the situation.
As they prepare to leave - something happens to one of them.
He is behaving more and more like one of the residents...
A surprising sequence of events sees the four strangers slowly integrating with the people and customs of this very strange town.

Eventually three of them are part of the very fabric of the town.
There is one that resists - but he is slipping...

Will the remaining one crack?
Will any of them they ever leave?
Will they ever be allowed to leave?
Will their families wonder what the hell has happened to them?
What are the secrets of the strange desert town?

"I am a Pie"
A bladey bladism of a movie.