The screen opens with Maddie and Jack testing a laser, which reflects from Jazz's mirror, while she is reading.
"I just don't get how we keep getting this wrong", Maddie admitted, then looks at the blue prints.
"The blue prints are backwards", guessed Jazz,while Jack is checking the laser.
The Fenton Portal opens where Sam,Danny,Shade,Tucker,and Taylor.
"Danny! Are you okay?" asked Maddie,Jack,and Jazz.
"Yeah", answered Danny.
Danny explains that sometime in the past, him,Sam,Tucker went to the future, where they met an evil Danny phantom who was terrorizing Amity Park.
This Danny lost his family,so he went to live with Vlad, the pain of losing his family, made Vlad make the decision to split Danny's human half, and his ghost part.
The ghost part of Danny split Vlad's human half and ghost and possed Vlad's ghost half,both ghost's DNA mix, and he kills his own human half.
The future Vlad lived, the Danny from the past met the Danny from the future.
Evil Danny phases the time medallion into regular danny's stomach,so he can't go to the past, and Sam & Tucker get sent back to the present.
Evil danny tries to recreate what happened to him,that made him the evil Danny phantom. He disguises himself as the regular Danny.
Jazz is the only one who knows something is wrong about this Danny.
Back in the future, Danny finds Vlad to get the time medallion out of his stomach,but Vlad turns on him.
Danny ends tied up on a chair getting sent into the future ghost zone,where he meets his old enemies, who look messed up.
His older enemies attack him which activates his new ghost power: the ghostly wail, which blows all his enemies away.
Previously in the present, Jazz sent the boomerang to find younger Danny, with her ribbon wrapped it, and it finds Danny.
Well, Danny from the future is revealed by Jazz as fake, which makes him act fast trapping Jazz,Lancer,Maddie, and Jack against the nasty burger that's about to blow up.
Danny faces Evil Danny, which seems to be an even match, and soon he defeats his evil self sucking him into the Fenton Thermos.
Danny was too late to stop his family and friends from blowing up, when Clockwork stops time, put the medallion on him to unfreeze Danny.
Danny gets congratulated by Clockwork by defeating Evil Danny, he takes the Thermos, resets the time to the part where he gets to retake the test.
Danny gives the test answers back to Lancer and admitted he was going to cheat.
After school, Danny and Jazz talk, and she reveals she knew about his ghost powers since the Spectra incident during spirit week.
That's where the Flashback story ends.
"So, how do we stop him?" asked Jazz, walking up to Danny.
"We need to gather allies from people and ghosts, which means we need to split up in teams to convince them to help us", Danny tells Jazz and his parents.
"Alright, who's with who?" asked Maddie.
Maddie,Shade, and Sam have to convince the ghosts,Taylor,Jack, and Jazz must convince the people outside of Casper High, and Danny along with Tucker needs to convince the teenagers in Casper High.
Danny and Sam wish each other luck, Taylor and Tucker smile at each other, Jazz and her parents hug.
They split up.
Walking towards the mall,Danny and Tucker head inside,and start to look away.
"This will be the first time, I've been in the mall without security", Tucker admitted.
"Kind of familiar, lots of people have been taking pictures of me, lots of talk, but it seems to calm down for now", Danny replied.
They see Dash,Paulina,Star, and Kwan at a table talking,when they hear a howl.
The howl is coming from a giant ghost wolf, that has a red collar on her.
Behind the wolf is Skulker,who has new technology, that he uses to take the energy out of everybody's phone.
This makes Danny and Tucker look suprised,yet not surprised at the same time.
"I'm going ghost", said Danny.
After Danny said his iconic catchphrase,everybody put their cameras out.
Danny changes to his ghost form,that made people smile.
Skulker notice Danny,and blasts a huge electric field toward him,but Tucker uses his lighting rod in his rod absorbs the electricity.
"Thanks,Tuck",said Danny.
"No prob", replied Tucker.
Danny uses his ice powers to mess up Skulker's technology.
The next scene goes to Maddie,Sam,and Shade in the ghost zone.
"So,what is this place like?" asked Maddie,driving the Spector Speeder.
"Normal,yet kind of abnormal", Shade tells Maddie,while flying through the ghost zone,and wearing a microphone.
"So,who could we trust?" asked Maddie.
"I have an idea,follow me", said Shade,
Shade takes them to an b;ue/purple house,that from the inside it looks like an apartment.
But,that's just a disguise, besides the apartment isn't important,it's the girl inside.
She has curly black hair, wearing a green dress, also her name is Aquasi, and she's eating macaroons at a table.
Shade knocks on the window, this gets Aquasi attention.
Aquasi opens the window, letting Shade in, Sam and Maddie join them.
Sam and Maddie are wearing special clothes that keep them from phasing through the floor, it looks like jumpsuits, Maddie's is blue, Sam's is black, and look space-like.
"What can I help you with?" asked Aquasi, sith a sweet smile.
"We need an Allie, have you heard of Danny phantom?" Sam told Aquasi.
"The half ghost, half human, you know him?!" gasped Aquasi.
"Yeah, he's my son", Maddie admitted.
"And my boyfriend", Sam confirmed.
"Interesting, I love to be your Allie, but the other ones around her might not be that easy to convince, they think Danny phantom can't be trusted", Aquasi informs Sam,Maddie, and Shade.
This worries Maddie, but not Shade and Sam.
So, Sam and Maddie leave the house, Shade and Aquasi share a kiss for a second, Shade leaves for a second.
The episode ends with Sam and Maddie driving into the ghost zone with Shade following them, and then there's two mysterious shadows.