Demons Inside

The world is filled with demons and they feed on humans with no mercy.
There are also Demon Hunters who hunt for them and kill them, preventing them from destroying the world.
Avery Evans has a demon locked up inside of her and it's the worst kind that made the world rain blood and killed upon thousands, including her dad.
Then there's Conner Kent, who comes from a long line of Demon Hunters and seeks revenge for his parents by killing Demons ensuring they never kill another innocent.
As their paths clash together will they fight each other or work together when the Demon inside Avery is finally going to be released?