Magical Half-blood

Clarissa Henson, a demigod child of Poseidon finds out she is a witch. She is then assigned to lead a quest to Hogwarts School of Witchcraft and Wizardry, where she, Percy, Annabeth, Thalia and Nico will attend. There they meet Harry Potter and his friends. With the threat of Voldemort and Kronos rising, the two worlds must collide. Will it work? Read to find out! Takes place during Order of the Phoenix and The Battle of the Labyrinth