Watch The Gate II: Trespassers
In the sequel to the 1987 hit movie, The Gate, we are brought back into the Lovecraftian world of interdimensional demons summoned by a group of naive kids, who are attracted to the occult and supernatural. In the first movie, the demons were confined to a backyard. This time, they are everywhere. Instead of coming through the ground, they enter our world through the kids. This movie was meant for teens and young adults with a definite moral to the story. The kids learn that they should never tinker with things that you don't fully understand.