After shutting off the ghost shield, Donny and the others ran for Dark Danny's base, which was surprisingly Casper High.
"Donny, watch out," said Tom as he shot an Ecto Blast at a dark ghost that had been sneaking up from behind him.
"Thanks," said Donny.
"Don't look now, but there's a whole lot more," said Princess Dorathea who was in her dragon form.
"Cujo, fetch!" said Donny. The ghost dog then turned into his monster form and chased the dark ghosts away.
"Good boy," said Dana as they ran past them. They then reached the school, which seemed to have no guards.
"Why would Dark Danny leave this place unguarded?" asked Donny.
"So, you finally made it," said a ghostified Valerie Gray as she came flying up from the ground.
"Valerie, you're still able to talk?" asked Donny.
"Dark Danny made all of us aware," said Valerie as dark ghost versions of Danny, Sam, Tucker, and the rest of their families and friends showed up.
"No, now we have to fight them?" asked Tom as he looked at his dad.
"Donny, we'll fight them," said Dana.
"You go and fight Dark Danny," said Fast as he blasted a ghost that was trying to sneak up on him.
"Are you sure?" asked Donny.
"Yes, now go," said Wulf in his language.
"I'll make sure to fix this," said Donny as he ran into the school and headed directly for the gym.
"Nice to see you again, son," said Dark Danny as he sat on a throne made of flames and stone.
"You are not my father," said Donny.