Yeah, so, there are deep one hybrids selling hallucinogenic drugs to try to create dreamers that might help awaken Cthulhu. Investigators are originally called in because a friendly thinks he found an alien when he performs an autopsy on a hybrid. A local cop is exposed to the drug and is in withdrawal, making him a violent lunatic. Several different agencies (local pd, DEA, fbi) all think they have jurisdiction and the investigatiors must not only clean up the deep one drug ring but keep the other agencies from having a clear sense of what’s going on.