Summer, 1969, Davison City Minnesota. Best friends Beth and Evie, both age thirty, are helping to convert a closed movie theater, The Majestic, into a live theater, when a local radio shock jock and farmer, Vern Cedar, steps into the scene. He gets into a heated argument with the theater's owner, Logan Rusk.

Later, Vern is found dead in his grain bin and Logan is arrested for his murder. Beth and Evie have local fame for solving crimes, so the theater crew convinces them to try to discover who killed Vern, and clear Logan's name. Beth, a library assistant, passes the Cedar farm on her bookmobile route, so she stops to question Vern's widow and the neighbors. This infuriates Officer Bill Crample, who demands that Beth and Evie leave investigating to the police. But they fear the police will not solve the case quickly enough to save Logan and the theater. The stakes are raised when Beth receives anonymous threats. But Beth and Evie still refuse to quit. Will they uncover who did it before the killer strikes again?