Well, I learned DPcrazy had developed more chapters of her "Adventures after a Mistake" but since I've started my story before that I'll keep following my way through it. Let's go ahead and see if Shadow will really try to get even with his sister.
After flying all her way to Wisconsin, Abby Phantom finds the football stadium mentioned on the ramson note and finds nobody but Shadow waiting for her. She lands on it and a Ghost Shield is activated sealing both of them inside the field. Vlad appears in his human self in front of them.
"Run away, Sir." Abby says. "This is an Evil Ghost and I'll hold him while you escape."
"There's no need to worry, Abigail." Vlad says. "This Ghost Shield is modified so no ghost or human will be able to leave the area inside it."
"Really? How do you know that much about ghost technology?" Abby asks.
"I worked on it with your grandparents during the college days. My name is Vlad Masters." He says.
"The Vlad Masters who used to be Mayor of Amity Park until exposing himself as an Evil half-ghost named Vlad Plasmius and holding the world hostage during the Disasteroid incident?" Abby asks, surprised.
"Enough about me." Vlad says. "Neither you or Shadow will leave until one finally destroys the other."
"Good. It was just a matter of time until I destroyed him anyway." She says.
They start fighting each other and Vlad delights himself watching it all when Danny, Sam, Jack and Maddie arrive on the Specter Speeder. Danny went intangible and snatches the remote from Vlad like he did in "Secret Weapons".
"Nice try, Daniel." Vlad says. "But that won't do you any good without the correct password and if you ever try an incorrect one you'll kill both Abby and Shadow. You won't risk having both of your children killed. Will ya?"
"What do you mean with "both"? Is Jake also inside the shiled area?" Danny asks.
"Oh, perhaps this video will explain it all." Vlad says.
Vlad produces one of his robot spies and shows a video of when Jake got inside the Fenton Portal hoping to be turned into Jake Phantom but becoming Shadow instead.
Danny is shocked. "Jake is Shadow? Why didn't he tell?"
"Daniel." Vlad says. "You should have known it better than anybody else. You, who feared your parents would rip you molecule by molecule after knowing you're Danny Phantom. He probably feared his sister would still hate him even knowing the truth."
"See, Danny." Sam says in triumph. "I told ya Jake would feel misplaced and would be afraid of being rejected if discovered to have a ghost half that doesn't look like Phantom. I'm surprised myself but I understand Jake's fears. I hope there's time to save both Jake and Abby."
"All right, Plasmius. Tell me the password or else..." Vlad threathens.
"Or else what, Daniel?" Vlad asks and then goes ghost – that's Danny's catchphrase but Vlad doesn't have one of his own. "You can't force me to tell. Unless Madeline agrees to ditch her husband for me."
"Never, you seriously crazed up fruitloop." Maddie says.
"Fine, try to rescue your Abigail and your Jacob without knowing the correct password." Vlad says.
It seemed that nothing would prevent Shadow from winning the fight but Abby suddenly develops the Ghostly Wail and not only knocks Shadow but also destroys the Ghost Shield. Abby turns human again and, for her surprise, so does Shadow. Seeing he lost, Plasmius flees back to the Ghost Zone while the Fentons take Jake back home.
Jake wakes up. "Where am I?"
"You're in your room, Jake. Or should I say Shadow?" Danny asks.
"Huh?"
"Forget it, Jake. We all saw you turning human after your sister knocked you down with her Ghostly Wail. By the way, when did you develop that, Abby?"
"I've never done that before." Abby says. "But why didn't you tell me before you also had ghost powers?"
"I thought you guys would reject me for having a ghost half that does not look like Phantom. I couldn't take you and Tori trying to destroy me because of my look. Not even Dad telling me as Shadow about when he used to be labeled as a bad guy diminished my fears. Talking about bad guys, aren't you angry now I really became a villain?" Jake asks.
"I was but Dad told me how manipulative Vlad Plasmius can be and how hard is to keep being good with everyone else thinking you are Evil." Abby says. (Danny didn't tell of how he only didn't become evil because Clockwork changed time)
"You're welcome to join us against Evil but first catch up with your weeks absent from school." Danny says. "I have already asked Matt to give copies of all that was taught last 2 weeks so you'll have no problem. And you'll have to pass make-up tests because of the ones you missed."
If you think my story is over because Danny and Abby learned Jake is Shadow you're wrong. Next chapter will show Jake adjusting to his student life and starting his ghost hunting as a member of Team Phantom.