The Sea's Revenge

I do not own Percy Jackson nor do I own the avengers, they belong to much cooler people than myself.

a/n I don't know how long I intend to make this story, it was an idea that sprung to mind whilst binging on cola and tv.

AU after the end of the Heroes of Olympus, ongoing chapters will contain flashbacks and will help to explain the changes I have made.

Premise: Poseidon lies dead; his two most favoured sons vow to avenge his death. The Accord has been broken and they will bring war to those responsible. Perseus Jackson the Slayer, The Storm Lord will have blood for his father's death and his brother Triton the new god of the seas and King of Atlantis will be beside him.

Chapter 1:

I suppose I should start at the end of the last Great War, Gaea was for all purposes dead and we were mourning the loss of Leo Valdez our friend and brother in the prophecy. Father invited me to spend some time in Atlantis and even though I accepted I was still unsure of the reception I would get from Dads family down there. I was offered immortality and this time I accepted on the condition (Zeus rolled his eyes and chuckled) that if I choose to it could be taken away but most importantly that I was still free to fight for Olympus and my friends.

Tartarus had left too much damage in its wake and as much as I loved Annabeth we both needed time to come to terms with what happened, we ran on adrenaline after escaping but now we were exhausted and the trauma we had gone through re-surfaced. We had talked with both my Dad and her Mom, Athena agreeing that it was for the best that we tried to take time and heal (secretly I think she was glad to get rid of me) promising to take Annabeth on a holiday and spend some time healing her daughter. That's were Dad jumped in and said I was going to Atlantis.

The day had come and after saying goodbye's to my mom, Paul and everyone at camp I left to meet my Dad. It's kind of funny sometimes that my Dad can be as big of a goofball as me yet when unleashed he is fury un-restrained and the power it shocking; Jason would probably kick my arse but Zeus ain't got anything on my dad. Standing at the beach I wait and suddenly with the salty smell in the air my dad is next to me.

"Are you ready Percy?" asked Posiedon with that same crooked grin and the deep sea green eyes.

"Sure Dad." And with that my Dad placed a hand on shoulder and with a pop with appeared in the throne room of Atlantis.

"ALL HAIL Poseidon." Cried a Dolphin to the right of the throne and with that I noticed how many were in the room, hundreds of my father's subjects were kneeling before him.

Suddenly a voice from behind us called "Husband you have returned."

Turning around I gulped, there stood Amphitrite and Triton "Oh crap" I thought as I bowed to both of them (don't get me wrong they both can be stuck up idiots but I know we got to at least be civil).

"Perseus, I think we need to talk." And with that the Queen of Atlantis beckoned us to follow her.

As we walked ( weird right, walking underwater but hey this is Atlantis and you got to do as the Merman do) I noticed the beauty of the palace for the first time as last time I was here there was war and let's be honest it was not is best.

As we entered what I assumed was a sitting room, I was beckoned to a seat made from oyster shells and sea-weed it was surprisingly comfortable. I waited until all were sat and the Queen ordered for the family yeah she said family to not be disturbed, the great doors to the room swung closed. Turning to me her expression was one of both remorse and hope at the same time.

"Perseus, we did not start off on the right foot so to speak and after many talks with your Father both I and your brother believe that we need to start again and come to know you for yourself; the sacrifices you have made for this family and for the world itself demand no less from us. I want to apologise, it was not your fault that you came to be and for me to blame you is far from ok, you offered me respect and kindness and that was a first for a demi-god of my husbands and for that I should have seen that you were cut from a far better cloth than those who came before. I ask you to give us a chance and see if we can at least become friends."

I was shocked, Dad had tears in his eyes and my stomach felt like Kronos himself had kicked me. They wanted to try and be family if they could, I looked at Triton and he actually acknowledged me with that same grin both Father and I have.

"Brother and I use that in the truest sense; I want to apologise as well, I do not handle things well when it comes to father's demi-gods and I rejected you as much as I rejected those who came before and for that I am sorry. I should have taken time to know them and you, you a mere whelp of a boy offered to help defend this city and I scoffed at that as what you could possibly do. But time has shown that you are a true son of the sea, you do not bow before a storm and you have risen to meet every challenge head on. I hope we can forge a friendship and in time I hope you can call me brother. Father is right that we are family and I will help as much as I can to heal you from the trauma you suffered in Tartarus."

At this I was stunned into silence, something I was sure most people have been praying for some time to happen. I sat there and looked at them, turning to my father he had such a look of hope on his face and I knew I had to try.

"I cannot promise anything, but I want to give this a shot." Holding my hand out to Triton, we clasped wrists and fathers and I guess my new step-moms hands settled above ours.

"Hail, Perseus Prince of Atlantis, The slayer of monsters and the champion of Olympus." My father pronounced to us and a glow settled over all of us as this sea answered his announcement.

10 years later:

A scream shattered the peace of the sea, with all speed the brothers took of their parents chambers; lying of the floor cradling the body of their father was their mother, golden ichor splattered the walls, their fathers corpse before their eyes both brothers collapsed to their knees and the fury of the sea's broke loose as they screamed in rage.

On the wall was a message in their father's blood "I Loki, Son of Odin declare war on you all!"