I do NOT own The Heroes of Olympus and the Avengers. I did put in some of my own characters. Leo learns about his long lost uncle, Tony Stark. The Seven, Reyna, and Nico meet the avengers at Avengers Tower. The twins, Clara and Joe (I own these characters) arrive at Camp Half-Blood knowing something is wrong. Something is watching the 11 demigods. But what? FYI I'm not very good with descriptions. But the book is better. When I'm done with the story I will make the description better. Another FYI I'm also writing about three other books along with this so updates might be a little slow. But please read and vote and comment!!! Twins of the Sea is the beginning of Clara and Joe if your confused on everything that's going on, read that book. Book#2 in the My Demigod Series