The Sinners: Rosalina and Abel are happily married, despite all the cheating the two do. In order to spice up their marriage, they indulge themselves in a variety of activities: sex, drugs and even . . . murder. The Saints: Loretta and Aubrey, on the other hand, have a completely different relationship to that of Rosalina and Abel's - they are pure and loving towards each other, they've never cheated on each other or taken drugs. That all changes when they meet Rosalina and Abel, who introduce them to their world.