The secret battle being waged between Demons and Gargoyles ....

Also: the Gargoyles' cathedral HQ in the middle of a city.
They don't know where the Demons' HQ is until Adam leads them there. Turns out it's an enormous palace, 5 minutes' walk from the cathedral, has been there for centuries without the Gargoyles noticing.

And the giant cathedral in the middle of a modern (unnamed) European city (though everyone speaks (mostly British) English), that no humans or priests visit for church services or even notice when flocks of Gargoyles fly out and battle Demons. No police, no spectators. Just CGI monsters fighting each other like some videogame.

Yeah, and apparently people don't own camera phones in this world, and Youtube doesn't exist. That's how they keep it so secret.

Gargoyles versus Demons?
Are Gargoyles the good guys?

Vampires were there? Wow! I didn't see that coming.

Bulls make money, Bears make money, Pigs? They get slaughtered!

Dozens of gargoyles flying around. Hundreds of vampires running in the streets and rooftops. Flames and beams of light shooting every where. So secret.

Yes, a secret battle waged between Gargoyles and Demons ... in plain sight high above a city that seems to be mostly deserted of humans out in public and on the streets. Where the hell are the city residents during the street fight shots? It's like one of those old world towns where no one leaves the house after sundown to be safe from the unknown monsters lurking in the dark.

I can only suspend my disbelief so far, this time it didn't work. Sitting there saying "oh my god you've gotta be kidding" and "come ON!" more than once is a bad sign

I know what it was. It's like that Mortal Instruments movie where they had these runes that made themselves invisible to humans. The Gargoyles and Demons have some magic bullsh!t that makes their supernatural activities unseen by humans. But some still leak through every so often (like that cop who was killed near the beginning).

"IMDB: Where Intelligent Film Discussion Goes To Die" - Scott 'The Foywonder' Foy; Dreadcentral.com

Yeah -- and with all those demons bursting into huge fireballs when they get killed on the rooftops, how come the cathedral and the entire neighborhood aren't going up in flames?