A sinkhole opens up beneath a mental hospital and six criminally insane patients escape. Dr. Danika Chambers has to see to it that they're captured. Sheriff Maurice LaMott isn't keen on her determination to go down into the hole, though.
 
When a disaster brings Dr. Danika Chambers together with Sheriff Maurice “Maury the Jock’ LaMott, Dani discovers to her dismay that there’s still a lot of chemistry between her and the man she’s tried to forget.
 
There’s a monster loose in the caverns below, though, and it’s starting to look like neither one of them will make it out alive.