Percy Jackson voldemort's grandson (herry potter Percy Jackson crossover)

During the finale battle against the gaints annabeth died at the hands of Gaia. In a state of rage Percy kills Gaia but is wounded pretty badly and the only way to save him was to deage him to a 5 year old and since the gods aren't cruel they erase his memory of ever thing after he was 5 so he can have a normal life.

The order of the Phoenix has just found out that voldemort has a daughter named Sally Jackson-blofis and a grandson named perseus Jackson and they live in America . With voldemort trying to gain allies they try to get there first. Will they get there in time or will voldemort get a very powerful allie?

set during the order of the Phoenix.