This is how Director Sombra meets with Nightmare Nova goes in My Little Pony Transformers: Rogue One.
[At Cyberfar, we see Sombra's shuttle arrive]
[We see a tower]
[We then see a soldier walking down the hallway]
[We see him enter a rejuvenation room]
Soldier: My lady, Director Sombra has arrived.
[We see he is talking to Nightmare Nova]
[Director Sombra enters a large room]
[Suddenly, we see a door open as we see Nighmare Nova's shadow]
[Nightmare Nova approaches him]
Nightmare Nova: Director Sombra.
Director Sombra: Lady Nova.
Nightmare Nova: Why have you come here?
Director Sombra: I have been unfairly replaced by Grand Moff Tirek.
Nightmare Nova: I should care because why?
Director Sombra: It is my achievement.
Nightmare Nova: You seem unsettled.
Director Sombra: No, just...pressed for time. There's a great many things to attend to...
Nightmare Nova: [sarcastic] My apologies. You do have a great many things to explain.
Director Sombra: [looking nervous, as Nova paces around him] I delivered the weapon Nightmare Moon requested. I deserve an audience to make certain she understands its remarkable...potential.
Nightmare Nova: Its power to create problems has certainly been confirmed. A city destroyed. A facility openly attacked.
Director Sombra: It was Governor Tirek who suggested the test.
Nightmare Nova: You were not summoned here to grovel, Director Sombra.
Director Sombra: No, it's—
Nightmare Nova: There is no Unicron Star. The Senate has been informed that Tatooine was destroyed in a mining disaster.
Director Sombra: [resigned] Yes, my lady.
Nightmare Nova: I expect you not to rest until you can assure Nightmare Moon that Galen Erso has not compromised this weapon in any way. [turns and walks back up the ramp]
Director Sombra: So I'm...still in command?
[Nightmare Nova stops walking, her back facing Sombra]
Director Sombra: You'll speak to Nightmare Moon about... [starts choking]
[Nightmare Nova turns around, her horn lit up]
Nightmare Nova: Be careful not to choke on your aspirations, Director.
[She releases him]