This is an oneshot. I had this dream, except with me instead of Danny and my friend's grandpa instead of Sam's Dad.
Danny was awoken by his ghost sense, he jumped up, and he changed. He was ready to phase through the roof, when he realized who it was.
"What's wrong Clockwork?"
Young Clockwork appeared, with his time staff in his hand as usual.
"Daniel. You are needed to save someone's life."
"Who this time?"
"Jeremy Manson."
"Wait, Sam's Dad?"
"Yes. He will have a stroke at 4:56 AM today. If he is not at the hospital when he haves it, he will die. He can not die now in this time line."
"So I have to go tell Sam's mom that her husband is going to have a stroke?"
"Yes, you will not reveal yourself."
"And how do I do that?"
"That is your problem." Clockwork vanished.
Danny sighed, and looked over at the clock. 4:20? He phased out the window, and came up with the brilliant idea to tell her.
Pamela awoke from her beauty sleep. She looked over, and saw her husband, who had been in pain for the past few weeks. She rose, and went down stairs, as she heard something rattling around downstairs.
She came down the stairs to see Danny Fenton, the nasty boy that her Sammykins always hung out with, sitting at the table. But how did he get in? He must have broke in and wanted to steal something! Or take Sam away from them!
She snuck up on Danny, and then noticed something. He was slightly see through, like a hologram. He became solid and turned around.
"Hello Pamela."
"Danny. Get out of my house or I'll call the cops! You're not taking Samantha away from us!"
"I'm here to warn you. Your husband is about to have a stroke. If he is not at the hospital when he does, he dies."
"My husband is fine!"
"He's not. He's in a lot of pain, and he'll die unless you take him to the hospital."
The clock stroke 4:30.
"You must take him. Or I have failed." Danny looked down, and then started to turn invisible.
"Take him or he dies!" He vanished. Danny floated up through the ceiling and started to laugh. "That was so much fun!" He changed and flew home, hoping she listened.
Danny awoke the next morning, as his phone was ringing.
"Sam? What time is it?"
"It's 5:30. My Dad just had a stroke and he's in the hospital."
"Woah. I hope he's ok."
"Yeah, now. The doctors said he would have died if he weren't here when it happened. I was wondering why Mom woke me up and dragged us here. Now I'm glad she did."
"I'm glad for you Sam. Call me later, ok?"
"Got it. Bye Danny."
"Bye." Danny hung up, silently laughed, and fell asleep.
Stupid Plot bunny!
This is all happen in a dream, and my friend's granddad really is in the hospital because he had a mild stroke. I changed it a little bit, but it turned out ok.