SUMMARY:
An amateur occultist tries to summon the devil in order to try and sign a pact so that they can be an all-powerful summoner just like their Dad, but it accidentally fails and they end up with seven evil versions of themself based off the seven deadly sins causing havoc in their family mansion. They have to search around this hideout and kill these doppelgangers before their Dad comes home, all the while they deal with some strange side-effects from their failed ritual..?