The god's hate us don't they? [A PJO x DC Crossover]

It has been only a few months since Nico and Will had returned from their trip to the underworld. But it didn't seem to stop the fates as many demigods start suddenly disappearing, because of this Nico, Will, Hazel, Leo and Piper find themselves having to go to one of the most crime ridden cities in the US, Gotham. There they'll have to take on secret identities at night to investigate what's happening and either avoid or collaborate with the already existing vigilante group in the zone.

The characters don't belong to me, they belong to Rick Riordan and Gardener Fox (is that how it's written?) anyways, only thing that specifically belongs to me is this plot