Here's a review, which gives the plot of the first act and isn't a positive one.
http://variety.com/2015/legit/reviews/permission-review-robert-askins-1201501862/To quote:
But the second act, surprisingly, is a letdown. Askins delivers the expected plot developments: Eric and Cyndy adopt their own variation of CDD, and in due time, husbands and wives indiscriminately lunge at each other with abandon.
But in the end, there's not quite enough fun to be had from this Christian version of marital S&M, and strange to say, all the spankings (expertly choreographed and quite realistic, let it be said) become repetitive and pointless. What this comedy really could use are a few scenes in whatever church preaches this insanity.