A possible summary is:
Matt and Rebecca are YouTubers who have been tricked by Agent S, a former ally who is now the leader of a new GMI that wants to take over YouTube. They capture two agents, M and D, who work for Agent S and try to do a lie detector test on them using Diet Coke mixed with truth serum. They find out some information about Agent S's plans and Mr. X's role, but they also get distracted by their own issues and the agents' crushes. They leave the agents alone for a moment to talk in a tent, but when they come back, they find out that the agents have escaped. They also realize that Agent R, another friend of theirs, is missing.
Here are the key facts extracted from the text:
- The text is a transcript of a video where Matt and Rebecca and their friends do a lie detector test on two agents, M and D, who work for Agent S.
- Agent S is revealed to be Frankenstein and the leader of a new GMI that wants to take over YouTube.
- M and D escape from the handcuffs and the safe house while Matt and Rebecca are in a tent.
- Matt and Rebecca were dressed as Scooby Doo characters because they were at a haunted castle before.
- M framed Zoey with a water bottle that had a hidden camera in it.
- M made Mr. X the prisoner at the haunted castle and put a shock bracelet on him.
- Agent R is upset because Agent S betrayed him and lied to him.