This is how Princess Luna's spirit thingy goes in
[The story begins in the cave and Princess Luna is chained to a chair]
Princess Luna: You snuck up on me, you jerk. Let me out.
[Evil King takes control of the pincer]
[Princess Celestia trots closer to see her sister]
[The pincer reaches for Princess Luna's soul]
Princess Luna: This can't be good.
[The pincer gets closer to Princess Luna's soul]
Princess Luna: No. No, no, no, no, no.
[The pincer grabs Princess Luna's soul]
[Evil King pulls the pincer]
Princess Luna: Oh no. No!
[Princess Celestia watches helplessly as the pincer pulls her sister's soul from her body]
Princess Luna's soul: [gasps] Hey, put back my spirit thingy. That is so uncool. And you're messing up my mane.
[The pincer sends Princess Luna's soul to the vat]
Princess Luna's soul: You're a jerk. Capital J-E--
[Princess Luna's soul stops speaking as she went into the vat]
[A demon jumps toward Princess Luna's body and opens her mouth and Princess Luna's body moves her hooves and the demon goes down Princess Luna's throat, possessing her body]
[The scene then shifts to Princess Luna's mane as the demon goes inside her body and possesses her]
[As the demon possesses Princess Luna's body, Princess Luna's hooves move around. The possessed Princess Luna awakens]
[The possessed Princess Luna looks left and right]
Princess Celestia: The demon possessed my sister.
[The footsoldiers arrive at the chair]
[Then the first footsoldier releases the possessed Princess Luna]
[Then Princess Luna speaks with a demon voice]
Possessed Princess Luna: Akodu. Mikenopa.
[Then the possessed Princess Luna, the henchmen, and Evil King leave the cave]
Princess Celestia: Twilight.
[Then Princess Celestia gallops to the vat]