It was the summer of 1965 when Bonnie Simms and family moved to the sleepy Tampa suburb of Brandon, Florida. Bonnie was 15 years old and so was her new next door neighbor Betty Yancy. At first the girls were friends but soon became bitter enemies. A few days before Hurricane Betsy would wreak havoc on Florida’s west coast, Betty’s dog went missing, her palomino colt was poisoned, and Bonnie’s dad killed Betty’s dad. During the hurricane’s aftermath the Simms family fled to California. Within one week, Bonnie crushed everything near and dear to Betty, who vowed to someday avenge Bonnie’s crimes. Fifty years later, when Betty tracks Bonnie down to Salt Lake City, Utah, she sets out in her trusty 1975 Skylark to Kill Bonnie, setting off a battle with her own conscience, and a near war-like debate between America’s religious leaders, politicians, criminal justice system and police. Betty’s avengement sets in motion a chain of events that culminate in open court at the Hillsborough County courthouse in downtown Tampa, as growing mobs of angry people take up Betty’s cause and viral-up a new mantra: Kill Bonnie! For as both sides soon learn, Bonnie never stopped doing the kinds of things she did to Betty’s family way back when. There's another problem: It appears as though Betty might have missed Bonnie after all!