Jeff got back to Ponyville after killing Princess Cadence, and Shining Armor. He was waiting at the oben, nach oben of his army's HQ with Twilight. They were waiting for Dr. Robotnik to arrive.

Jeff: I'm looking vorwärts-, nach vorn to ending this war.
Twilight: Me too man. Me too.
Jeff: When do we kill him?
Twilight: We? Let me do all the talking.

Song: link

Robotnik: *Enters room*
Twilight: *Shoots Jeff's horn off*
Jeff: Ah! *Falls on floor*
Twilight: *Looks at Robotnik* What do Du want me to do Doctor?
Robotnik: Du have forgotten your place Princess Twilight Sparkle, Von having your own... Student. Instead of teaching him magic, Du will kill him, for me.
Jeff: *Cough* Princess, we can defeat him together!
Robotnik: Do it now Twilight! Use your magic to defeat this worthless stallion.
Twilight: *Uses magic to make Jeff fly into the ceiling*
Robotnik: *Laughing* Good, very good.
Twilight: *Makes Jeff fall*
Jeff: Whoooaa!! *Lands on floor*
Robotnik: Yes! Kill him!
Twilight: *Uses magic to throw Jeff into a wall*
Jeff: Aaaaaaaaaah!!
Twilight: *Makes Jeff go through window*
Jeff: AHHHHHH!! *Falls to ground*
Twilight: It's done doctor.
Robotnik: Excellent Twilight. This is why we have Du in our army.

Meanwhile, outside of the castle.

Jeff: *Laying on ground, looking at the window he fell through* why twilight? after all the things i've done for you?

It seemed like he was dead, then two griffons arrived, and were taking him to a hospital.

Stop the music.

Griffon 1: I'm getting a pulse.
Griffon 2: Patient is breathing, but he is not awake. Ready doctor?
Griffon 1: Ready. 1, 2, 3. *Turns on light*
Jeff: AAAAAAAAAAAAHHHHH!!! *Finds himself tied to a table*
Twilight: *Standing in front of Jeff*
Jeff: *Sees Twilight* YOU!! Du KILLED ME!
Twilight: Naw man. I casted a spell on Du when I was shooting your horn off to make Du immortal for five minutes. I got these griffons to bring Du here, so that I could talk to you.
Jeff: Why?!
Twilight: Robotnik wants Du dead, but I can help Du defeat him, if Du do what I say.
Jeff: *Sighs* What do Du want me to do Princess?
Twilight: They're holding your pilot as a prisoner in a building across the straße from here. Proxy is in this building with you, and he'll help Du save Juno.
Jeff: Very well.
Twilight: Good. Get some rest, then save Juno. *Uses magic to teleport somewhere*
Proxy: *Arrives* Master, are Du alright?
Jeff: I don't know Proxy. We have to save Juno.
Proxy: I will be Mehr than happy to help Du master.
Jeff: Thanks, but that won't be necessary. Find Juno's plane, and let me know where it is.
Proxy: Yes master. *Goes away*

Will Jeff be able to save Juno?

Find out in the Weiter part of..

Twilight's Student.