As Noob realizes he got the wrong ending he goes back to the previous episode "Just a Prologue", as he tries to convince the others that they need to do the opposite but they refuse to listen.
Noob gets sent back to episode one because his friends broke the universe and Noob has to find a way to get back and he instead finds Leo who is suffering with the same fate as they find a portal that leads them somewhere new.
This is a new story "Arcade Blade" Leo and Noob try to find any sort of meaning towards this game but they instead have to fight corrupted 80s game characters and when they win they get sent another portal.
In this game Noob and Leo meet a demonic like version of Red and Scarlett which they have to fight and kill and they both finally escape and see the portal for back to the original game "Cacophony".
Leo leaves to discover more about Red and Boon, while he leaves Scarlett and Noob alone while Scarlett starts to flirt with Noob as they both start to get closer they see this new monster that looks similar to Boon.
Leo thinks about why Red could have corrupted Boon but then he realizes that Red might be the same species that Boon is except Red can take form of someone they know, and she could've possibly done that.
Scarlett and Noob decide to kill the monster without even trying to study it, and they after they kill it they start to make out as Leo walks in, mad at them for acting carelessly and annoyed at the fact that they started dating.
This shows Boon and Red's relationship before Boon was corrupted in to a monster, it shows their personalities and behaviors back then before they both became evil.
Leo and Scarlett start to argue so Noob runs away disappointed in his own actions as he sees Boon again, but he sees the one that he saw in the "Ending" episode.