Is this show on the the US? It shows all the time in the UK, and the people on it are American.....probably would be on WE or some channel like that.
Bsaically, someone challeneges a couple either to get "hitched" or to ditch each other. They get the wedding of their dreams, and a week to decide, then at the altar they either say "I Do" or "I Don't."
Totally trashy, and I love it because it makes me feel really good about myself.