"Six half-bloods shall travel to my land. There they must try and locate the Doors that lead to the Underworld and close them," the goddess announced.
Nico regarded her coldly. "And why do these Doors bother you so much? Isn't this supposed to be a matter handled by Hades?"
"That, Nico di Angelo, is something you have to figure out yourself."
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Time Period:
Happens after Blood of Olympus
Harry's fifth year at Hogwarts
Changes:
Leo is still at Camp Half-Blood and not with Calypso.
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Harry Potter and Heroes of Olympus belong to J.K Rowling and Rick Riordan. The characters, some of the lines and some of the plot belong to them.