Twenty-four years have now passed since Danny saved the earth, and school is about to start at Casper High.
"Where is he?" asked Dana Baxter, Paulina and Dash's daughter as she looked up at the sky.
"I have no clue," said her brother, Fast Baxter.
"Well he better not be late, or the teacher's going to give him detention," said Tom Foley, Tucker's son.
"Sorry I'm late," said a boy's vice from behind them. When they turned around, the three saw a ghost that looked like Danny Phantom, but with a black streak in his white hair.
"Nice going Donny, now we're all going to be in trouble," said Fast as the bell rang.
"Hey, I didn't tell you to wait on me," said Donny as he transformed to his human form and revealed a black shirt, blue jeans, and black boots. The color of his hair was reversed of his ghost form's hair.
"What kind of friends would we be if we did not wait?" asked Dana. Meanwhile, Skulker, Ember, and Johnny 13 were being attacked in the Ghost Zone.
"How are you still here, he changed his future," said Skulker whose armor was pure black.
"The thermos protected me from time being rewritten, that fool did not even see it coming," said Dark Danny as he floated before them.
"Well he'll defeat you again, and this time it will be for good," said Johnny 13 who had a hippy look to him.
"That's going to be tough if I have your powers and an army," said Dark Danny as his eyes glowed bright red. Later that day on earth, school had just let out.
"Man, another three days of detention," said Donny.
"You were late for the fourth day, the rest of us were just lucky," said Fast.
"Well detention is not the worst thing he will have to face," said Dark Danny as he floated in the air above them.
"I know you, you were in my dad's Enemy Data," said Donny before transforming.
"Then you should know just how evil I can be," said Dark Danny with a wicked smile as he landed before them.