Maggie Lennon's summer teaching break has just begun when she learns her sister, Rhoda, has suffered a debilitating injury. Maggie races to the rural Florida town of Eugenia to help, but quickly realizes she has stepped into a literal and virtual swamp of dysfunction. It doesn't take long for Maggie to turn from altruist to cynic as she battles madness and deception at every turn. When a producer for a national television competition comes to Rhoda's church to vet the choir, Maggie's other sister, Cheryl, joins them to audition. Together, the three women encounter a host of quirky and questionable characters as they weave their way through chaos, ex-cons, and conspiracies. Will the dark swamp devour them, or will the Lennon sisters survive to seek sanity another day?