Three female friends go away to a remote cabin on a lake for a relaxing weekend. They are soon joined by their male counter parts who show up and crash their girl getaway. While swimming the group finds themselves under attack by zombie beavers. They charge back to the cabin and prepare to fight the onslaught as the beavers close in for the kill. These are some smart ass beavers too, they took out the phone lines so the gang can't call for help leaving them to their own devices.
It's all fun and games till somebody loses a foot.