This is a short Twine game in which you play a priest, apparently during the construction of St. Peter's Basilica at the Vatican, with a summons to see the Pope. You have a cat that is given to quoting the most head-scratching, out-of-context Bible verses in a human voice when prompted.
You have to work your way through the Vatican and find the Pope to fulfill your long journey and answer the summons. Along the way a lot of dark, weird, unexplained sh-t happens. Not sure what else there is to say beyond that.
I think the author was trying to commentate on the Catholic church of the era in question, or perhaps the church in general. But I'm not sure. I'm not Catholic so perhaps I'm missing some context with which to interpret this game.
In the end I didn't get the message, if there was one, and didn't enjoy the game. Combined with a small handful of typos and this is a two-star game for me. YMMV.