Forty years ago in Spain, a small town was submerged underwater with the construction of a nearby dam. The rumour is that it was done for money but the truth is that it was done to destroy the evil that the town harbored, as they were demon worshippers. Now, a black substance is creeping forth from the water, claiming its victims. A local reporter - and a journalist also investigating the reason for the submerged town - hook up and investigate what's going on. The leader of the cult has returned and wants to infect the new town that is nearby, a town which is celebrating the forty-years of its existance.
I got the feeling the producers were trying to mimic THE FOG too much, using black fungus instead of fog.
This Brian Yuzna (RETURN OF THE LIVING DEAD 3) is not nearly as entertaining as DAGON, and the water effects look too unreal. So so.