A young man’s stomach pains turn out to be a portal to Hell opening in his abdomen from which demons periodically emerge, and he and his wife must run from mysterious people pursuing him. Stylistically like a Giallo flick, if that’s your sort of thing.
It’s different, I’ll give it that. I wouldn’t say it’s particularly good but neither is it particularly bad. It takes until the third act to really get going but when it does, decent acting and creature design really help it along.