Jonathan Graves (Peter Liapis) inherits his Satanist father's mansion. He throws a party and starts conjuring up Ghoulies, which are sort of demonic goblin things. This is a garbage Gremlins knock-off with no humor, charm, or entertainment value. The best thing about it is that it has one of the coolest movie posters of the 1980's, with the Ghoulie coming up out of the toilet. It's just not a fun movie at all. It's nasty and cheap. Avoid this mess. See Gremlins instead. Or you can just skip this one and watch the better Ghoulies part 2. But yeah, Gremlins is better than that too. So just watch Gremlins or even Critters over this dreck.