Dani opened her eyes and was surprised to find herself in Danny's room.
"Evening, sleepy head," said Danny.
Dani grasped her head and asked, "What happened to that weird purple tentacle guy?!"
"He disintegrated after I used my Ghostly Wail on him," said Danny, "Why was that thing attacking you anyway?"
"I'm not sure," said Dani. "Unless he really doesn't like being bumped into."
"Well, anyway, I think it's best for you to hide out here for a few days," said Danny.
"That's not necessary," said Dani.
"Too late," said Danny. "I already asked the folks and they said you could stay here."
"How'd you get away with that?" asked Dani. "You went to them and said 'Mom! Dad! Is it okay that my younger, gender flipped clone created by my arch enemy, who tried to destroy us every day, stay at our place for the weekend?'"
"No. I just used the same lie you used on me when we first met, cousin," said Danny with a smirk.
Dani cheeks turned red with embarrassment and responded with a simple, "Oh."
"C'mon, dinner's ready," said Danny. "But before we go down there, I need to tell you the rules here. #1: No Going Ghost. #2: No telling anyone who you really are. #3: Do not, I repeat, do not tell anyone you're related to Vlad in any way."
"Those are the rules here?" asked Dani.
"No, those are my rules," said Danny. "The Fenton household's rule is never eat dad's pudding."
Later at the dinner table…
"So, Dani…," said Maddie.
"Yes?" Danny and Dani answered simultaneously.
"I was talking to your cousin, Danny," said Maddie.
"Oh, right," said Danny. "This won't get confusing at all."
"So, Dani, where are you from?," asked Maddie.
"Oh, um, I'm from Colorado," Dani answered.
"Colorado? I went to a ghost hunting convention is Colorado once," said Jack. "I was there to unveil a new ghost hunting tool that I was sure would wow the crowd."
"How'd that go?," asked Dani.
"It exploded and everyone chased me away with their ghost hunting weapons," Jack said in a disappointed tone.
"That wasn't our best vacation," Jazz added.
After dinner, Dani plopped into Danny's bed and let out a big yawn.
"Man, I didn't even talk about myself down there," said Dani.
"That's good," said Danny. "I guess that means you'll be fine here tomorrow while I'm at school."
Danny turned around and was surprised to find that Dani was already sound asleep.
The next morning, Dani walked into the living room and found Jack working on the Fenton Foamer.
"Hey, Dani!" Jack called. "Come check out the new and improved Fenton Foamer."
"What's new about it?" asked Dani.
"It has a new Fenton logo on it," said Jack. "Try it out."
Jack handed the Fenton Foamer to Dani and she began to inspect it.
"How do you use it?" asked Dani.
"Just pull the trigger," said Jack.
Dani pulled the trigger and accidentally shot green anti-ghost goo on Jack's face. Dani laughed as Jack wiped the goo off his face and asked, "Think that's funny, eh?"
Jack rolled over to the coat closet and grabbed another Fenton Foamer from it.
"Let's see you laugh at this!" said Jack.
"Bring it!" said Dani.
Meanwhile, Danny grabbed his textbooks from his locker while talking to Sam and Tucker.
"So your parents let your younger, gender flipped clone stay at your house last night?" asked Sam.
"Close," said Danny. "They let my third cousin from out of town stay at our house."
"Are you ever going to tell them you've been cloned, dude?" asked Tucker.
"It's not exactly a conversation starter," said Danny.
"That's true," said Sam. "Well, I got to get to class. See you guys later."
Sam kissed Danny on the cheek and walked away.
"I seriously have to get a girlfriend," said Tucker. "I thought being mayor would help me there."
"By the way, Tucker," said Danny. "What are you doing at school? You're the mayor."
"I still need a high school degree, Danny," said Tucker. "Besides I can do most of the work on my PDA."
Tucker pulled out his PDA and showed Danny all the ideas he had.
"You're thinking of being the judge of a beauty pageant you're hosting?" asked a perplexed Danny.
"This will help me with my girlfriend goal," said Tucker.
Meanwhile, back at Fenton Works, Maddie walked into the living room and was shocked to find it covered in goo.
"Hey Maddie!" Jack shouted. "Come join us!"
"Join you?!" asked Maddie. "Jack! You destroyed the living room!"
Suddenly, Dani jumped from behind the coach, let out a battle cry and shot goo at Jack. Jack ducked the goo ended up covering Maddie from head to toe. Maddie wiped the goo off her and walked down to the lab.
"Do you think she's mad?" asked Dani.
Maddie suddenly jumped into the living room with her own Fenton Foamer, shocking Jack and Dani.
"Oh…" Jack started.
"…Snap," Dani finished.
Meanwhile, Danny walked out of his last class and headed toward the exit.
"Now I just have to get home and hope that nothing happened," said Danny.
Suddenly, a hole in space opened in front of him and a man stepped out of it. The man wore an eyepatch, long black hair and purple skin.
"Whoa, who are you?" asked Danny.
"My name is Venkalth Zul," the man introduced himself. "Ghost child, where is the ghost girl?"
"You want me to tell you where Dani is?" asked Danny.
"That is correct," said Venkalth. "We here to take her away."
"Well since you put it that way…" said Danny.
A few seconds later, Venkalth was blasted out of the school by a ghost wave. Danny, now in ghost form, flied out of the school and said, "Guess she isn't out here, huh? Should we try looking in the Ghost Zone?"
Venkalth summoned a spear and charged towards Danny. Danny dodged his swings but is then kicked in the stomach and thrown into a pole.
"Dude is stronger than he looks," said Danny, "And he already looked pretty strong."
Venkalth lunged at Danny but Danny caught the spear before it could reach his heart. As Danny struggled to keep the spear from reaching him, Venkalth asked again, "Now tell me where the ghost girl is?"
"What do you want from her?" asked Danny.
"You shouldn't care," said Venkalth. "It's not like she's important to this world."
"She's important to me!" Danny exclaimed.
Danny took a deep breath and unleashed his Ghostly Wail. The force of the Ghostly Wail pushed Venkalth away from him and into a nearby building. Danny flies to the building to finish the fight but was surprised to find out that Venkalth was gone. Danny reverted back to his human form and started walking home.
"I don't understand what's going on," Danny thought to himself. "Who are these guys and what do they want with Dani?"
Danny walked into his house and was immediately greeted by goo in the face. Danny wiped the goo off his face and noticed Dani, Jack and Maddie playing with the Fenton Foamers in the living room. Dani and his mother were on one side of the room hiding behind an armchair while Jack was on the other side behind the couch. Danny rolled over to his father's side and asked, "Dad, what's going on here?"
"You walked into the middle of a goo war, Danny," said Jack. "I'm glad you're here. Your mother and Dani have teamed up on me. How about you pull off a surprise attack?"
"I'm on it," said Danny. "I'm Going Ghost."
Danny transformed into his ghost form and phased himself downstairs.
"Give up Jack!" Maddie shouted. "You're outnumbered!"
"I don't know the meaning of the word give up," said Jack.
Danny then phased through the floor behind Maddie and Dani with his own Fenton Foamer. They turned around and watched Danny wave at them before blasting them with goo.