Danny wasn't sure what would happen when he went to this town but he was sure getting stuck in a demon trap was not part of the plan. And who is the kid standing in front of him holding some strange old book? Danny falls into a trap set by Dipper in the forest of a small town called gravity falls. Dipper and Ford, don't trust this "Ghost." And Bill sees a new opportunity arise. (Danny Phantom and Gravity Falls crossover)

It's the middle of the night when Danny's ghost sense goes off, he just wanted one full night of sleep but it looks like he's not going to get that anytime soon. He goes to investigate which ghost decided to pop up in the middle of the night (hopefully not Box Ghost), when he finds a strange portal has opened in the middle of Amity Park. Danny gets closer but accidentally gets sucked into the mysterious portal. Now Danny is in a world that is definitely not his own, everyone seems to have some sort of superpower and being a hero is a job. Danny got mixed up in something that he doesn't understand and now he has to try and find a way back home.

This day was just getting worse and worse for Danny. First, he gets dragged to Gotham City with his parents for some 'ghost hunting' convention, and then on his first flight out, he gets captured! Jazz is gonna kill him. Now he's stuck in a Fenton Tech Containment device in some strange cave filled with cars and computers, and he has no idea what to do or how he will escape. Right now he just needs to... -IS THAT BATMAN!? The Bats have been having a hard time recently. For the last few weeks, glowing green creatures from all over had been flocking towards Gotham City. They don't know what they are or why they are coming. They started getting their hands on 'ghost tech' from hunters across America, and now Bruce is holding a ghost hunters convention to see if he could get some more info. But now Tim was looking at the first ghost they have been able to capture. He had glowing green eyes and bright white hair. And he... He just possessed Tim, didn't he? "It's not possession, it's overshadowing! And how are you awake!?"

Danny Phantom, aka the ghost king, was minding his own business, but he gets summoned to another dimension by a kid who wants to try a magical book out. Now stuck in a dimension full of superheroes and supervillains, he decides to check the world out and get back in the hero business.