This is how Makuta captures Celestia and Luna goes in
[In the Shadow Realm, two Shadow Warriors bring Celestia before Makuta]
Makuta: They said it couldn't be done. The Princess of the Sun is too quick, too stealthy to be captured.
[Makuta cups her chin and tilts her head up and Celestia growls]
Makuta: Well here you are with a rare opportunity to make history.
[He lets go and Celestia glares]
Makuta: You see, I have intercepted this encrypted signal. And if it's encrypted, it must be important. Decode it for me and I will see to it that you remain alive.
Princess Celestia: You won't get away with this.
Makuta: Speak up. I can't hear you when you whimper.
Princess Celestia: [a bit louder] I said you won't get away with this.
Makuta: [gasps then laughs] Perhaps you will be more inclined to operate when it's not your own wellbeing at stake.
[Two more Shadow Warriors appear]
Princess Luna: Don't worry, we'll get out of this somehow.