The new demigod team

What happens when Gaea finds out about Poseidon having a Daughter, Zeus with another son, and a new prophecy concerning the two children? When Finn and Kaitlyn, two completely different children with two different stories, find out their demigods they lead their lives into camp half blood and team up with each other and the most unlikely of people. The two have to learn to work together to save the rest of their new home from the earth goddess that wants them dead.