(Nightmare breaks open the door and is absolutely furious)
Nightmare: THIS IS UNACCEPTABLE, SOMEONE WILL PAY FOR THIS!
Killer Sans: Boss, what happened?
Error: He failed.
Betty Noire: Everybody, just calm down.
Chara: Where is the time staff?
Nightmare: It wasn't there.
Dust Sans: What!
Nightmare: And it wasn't the time staff, in fact, the time staff doesn't even exist, it was an au transporter.
Killer Sans: An au transporter?
Nightmare: Yes, a device that allows anyone to transport to another au.
Killer Sans: But can't we already transport to an au?
Nightmare: Only people with no aus can do that, everyone else will need help from that person or he'll need that transporter.
Betty Noire: I didn't know.
Dust Sans: We've been thwarted again.
Error: I must say, it's rather coincidental.
Chara: Too coincidental, perhaps?
Error: I fear someone amongst us has divulged our plans.
Chara: A traitor?
Horror Sans: Forgive me but why would any of us sabotage our chance for revenge?
Fell Papyrus: Well, there was one.
Error: Wait.
Chara: You can't mean...
Nightmare: My corrupted brother.
Fell Sans: That's not possible.
Nightmare: Yeah, it can't be possible, he was banished by the very people in this room.
Dust Sans: I remember well, sticking his tentacles where it doesn't belong.
Chara: A collective effort on all our parts, only with all our powers combined, could he finally be imprisoned.
Error: And the only way he'd be released.
Killer Sans: Blasted former guardian of positivity must have slithered his way out.
Chara: Impossible, the curse we placed on him was absolute.
Nightmare: The only way she could've escaped was us using all of our powers combined.
(Nightmare remembers something, when they put a piece of their power in Betty's cauldron and when they used all of our powers combined, that must be how he got out and Betty told them to do it and she told them about an artifact that doesn't exist)
Nightmare: Betty Noire, indulge me, an eye for an eye, a wrong for a wrong, a time reversal spell, was it not?
(Betty Noire laughs)
Chara: YOU!
Error: Soul of fear, we'll have your head for this!
Horror Sans: One head dog, coming up!
Dust Sans: We were merely pawns in your little game to release Shattered Dream.
Betty Noire: You know what they say, never trust a stranger.
Nightmare: Understand, there are consequences to treason!
Betty Noire: Treason, I offered ya'll a chance to rewrite the past, too good to pass up.