This is how Midnight's Return goes in My Little Pony: Equestria Girls: Rainbow Rocks.
[We see a cafe in the EG universe where the patrons are arguing as a green mist swirls around their feet]
Female Patron: What?!
[We see a Predalien/Alicorn hybrid creature in the corner booth, vocalizing and absorbing the mist into his mouth]
Midnight: [growls in frustration] There must be a way I can get enough power to defeat that accursed princess.
[He hears an explosion and races outside to see a rainbow energy beam blast something, grinning evilly when he realizes what it is]
Midnight: It seems that Equestrian Magic from Twilight's realm has found its way into this realm. It might just provide me with the answer to my problem.
[The screen fades to black and we see a red string of web before the screen fades to black again. We see red mist as another red string of web comes by and we see two more red strings of web before we see shots of three spider webs and we see the fourth with My Little Pony: Equestria Girls: Rainbow Rocks on it before the sillouettes of the characters appear]