Luke Nolan has led the Hope congregation for more than a decade, while his wife and daughters have patiently upheld what it means to live righteously. Made famous by a viral sermon on purity co-written with his eldest daughter, Abigail, Luke is a spellbinding speaker. But his younger daughter, Caroline, has begun to notice the cracks in their comfortable life. She is certain that her perfect, pristine sister is about to marry the wrong man --- and Caroline has slid into sin with a boy she’s known her entire life, wondering why God would care so much about her virginity anyway. When it comes to light, five weeks before Abigail’s wedding, that Luke has been lying to his family, the entire Nolan clan falls into a tailspin.