There s something big and something hungry living in the murky depths of secluded Hillbilly Lagoon...and it walks on land. Following a toxic spill, science students from the state university are sent in to test the waters for contamination.  They are immediately set upon by insane and inbred locals who don t take kindly to strangers nosing about their town and beloved lagoon.  But that s the least of their worries when a hulking humanoid borne of radioactive mutation ascends from the inky blackness to fill in lungs with air and its stomach with human bait.