I don't own Danny Phantom. How do I know? I'm not a millionaire.

It was a boring day in the detention room. Danny Fenton had gotten detention for being late to class, again. Sam Manson and Paulina Sanchez had been caught fighting in the hallways. Valerie Gray (like Danny) had been late for school. Star accidentally caused a miniature explosion in the science lab. Dash Baxter and Kwan had been caught picking on Danny (for once) and Tucker Foley had been caught loitering near the girls' locker room.

Jazz Fenton was helping Mr. Lancer supervise, much to Danny's embarrassment. The overweight teacher and overprotective older sister sat at the front of the room.

Shortly after detention began, Danny's ghost sense went off. No, no, no! Not now! He was about to raise his hand.

"No need," an invisible voice whispered. "It's just me."

Danny looked around for the disembodied voice. "Danielle?"

He felt a hand in his lap as a pale hand and blue sleeve flickered into view for a second.

"Danny," Dani whispered. "You've gotta hide me! A ghost is trying to trap me in my worst nightmares!"

"Nocturne!" Danny said between clenched teeth.

Mr. Lancer cleared his throat. Danny and the invisible Dani looked up at him.

"Mr. Fenton, is there something you want to say?" Mr. Lancer asked.

Danny was about to say something, but a blue wisp escaped his mouth. A similar one floated next to him, obviously from Dani. "Oh, man."

A ghost appeared in front of the classroom. But not just any ghost.

"Nocturne!" Danny jumped out of his seat. He noticed most of his classmates confused looks and added, "It's Nocturne, right? My parent said something about you."

Nocturne laughed, evilly. "Oh, ghost child! Keeping your cover!"

Dash looked confused. "'Ghost Boy'?"

Danny grinned sheepishly.

"Where's the ghost girl?" Nocturne asked.

"STAY AWAY FROM MY COUSIN, NOCTURNE!" Dani had snuck behind Nocturne while Danny was confronting him. She tackled Nocturne from behind in a way that outdid Dash's tackles on the football team. She was still in human form.

"Dani!" Danny and Valerie both yelled.

Nocturne used telekinesis against the girl, making her float in thin air. "Well, how about we send you all into your worst nightmares!" He waved his hand and it all went black.