AU. Takes place before the Winter Soldier. When the Avengers stumble upon something they don't understand, a whole new world is revealed to them. And with it comes new threats, each more dangerous than the last. Meanwhile, Percy Jackson, now an older, more powerful demi-god, is on the warpath. When their paths meet, will their goals coincide? Or will their goals be opposite?

He's just a simple F.B.I. agent trying to catch an elusive cartel when his life is thrown out of control. One thing leads to another and he's brought into a secret organization with a single purpose. With his help they believe they can stop the terrorists they have been tangling with for years. And a certain person is making everything rather difficult.