Against Fate (Percy Jackson Fanfiction)

If you ever believe in 'Happily Ever After' endings,I suggest you not to. The thought will just break you.
Because there is no such a thing in the world.

Percy and Annabeth lived quite a peaceful life after the war against the earth mother.
They had believed in 'Happily Ever After'. But after an accident...
Everything had changed.

Everyone is forced to follow their fates. No one can fight against it.
But does that mean,we can't defeat fates? It seems to be a ridiculous idea. But really is there anything in the world that can stand against it? Against fates?And find a happy ending?