Two rats, Gilbert Moreau and his son Luke arrive at a bayou. Apparently, they're going swimming (even though the sign says not to!) after being blackmailed by the Leroys, another father-son family who's been nuisances to them both. Why are they being blackmailed? With what are they blackmailing them? What's under the water? You'll find out soon enough!

(They WERE going to be brothers, but screw it.)