Mother Sasha Pray Onn and Mother Bea Blister live on the edge-of Christianity, that is and they're about to knock Sister Betty off her sanctified perch. As the senior citizen matrons of the Ain't Nobody Saved but Us-All Others Goin' to Hell church, their devotion to the Lord and positions of President and Vice President of the Mothers Board must compete with their secret passions for gambling and openly holding grudges-especially against each other. But their long-held animosity is about to be complicated when the new pastor, the Reverend Leotis Tom, wants to reorganize the Mothers Board in time for the upcoming Las Vegas Conference and asks a reluctant Sister Betty to run for President.