It was another one of Quackity’s lesson, this one about betrayal and revenge. They were in Quackity’s office, looking over Las Nevadas as Quackity specified: Revenge needs to be successful.

Slime:> ”Is it worth it? I've been watching for a long time. One person lashes out and the other does until they're both gone. From what I've seen it feels like people won't stop taking that revenge. Is it ever worth it..?”