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