7 Sins is divided into seven segments, each one unique in its voice, acting, story, and style. While the seven deadly sins are cemented in Catholic Theology and are always the same, the interpretation by any single person is always different, and this assemblage is no exception. This film uses the themes within its subtext and introduces, and then wildly perverts, the punishments associated with the 7 Deadly Sins. The overall atmosphere is one of uneasiness that, in addition to a fair amount of disturbing visuals, is amplified by its pulse-pounding soundtrack.

Five participants take part in a psychology experiment on the aftereffects of a Ouija board session, finding something far more sinister than they could ever expect.