Sally Jackson decided that Percy wouldn't be going to Camp Half Blood or even Camp Jupiter this Summer... instead she sends Percy to her brother's house *cough tower cough* for the summer. To Percy's shock his uncle is no other then one of the avengers...After a few months Percy and his demigod friends join up with the Avengers. The group of Demigods become more then unlikely friends with the Avengers but part of the Avenger Family as well.
Disclaimer: I DO NOT OWN PERCY JACKSON OR THE OTHER DEMIGODS... AND I CERTAINLY DO NOT OWN THE AVENGERS... I ONLY OWN THE STORY PLOT...and an OC but you don't meet her till chapter 14. :)