When untold numbers of nutria suddenly vanish from theLouisiana marsh, veteran hunter Ronnie Adams finds hislivelihood at risk and calls Troy Landry for help. As theysearch for clues, the swampers discover strange environmentalchanges, damaged wetlands, and an eerie absence of life. Withtime running out, they call in Joey Edgar and his daughterKallie to help them track down the missing creatures through ashifting landscape.
