This episode starts out like many others: in the living room of the base, with everyone hanging out. The main difference is that they are not hanging out, but rather having a meeting.
Tyler: I called this meeting because there is something important I'd like to bring to your attention. Team, I regret to inform you that... There is a mole among us.
Chloe: A mole???!?! Oooh, I love moles! They're so cute, and fluffy, and-
Ryry: Not that kind of mole, Chloe.
Chloe: There are other kinds of moles?
Tessa: Yes, Chloe. In this case, mole means enemy spy. Nico sent someone to join Team Awesome and get information for him.
Chloe: Who's Nico?
Tyler: Somebody debrief her later. Anyway, does anybody have any guesses as to who the mole is? My money's on Dally Long Legs over there.
Dallon looks up from the newspaper he's been reading.
Dallon: I beg your pardon? Me, a mole? How dare you accuse me? I am offended! Why, I've half a mind to quit Team Awesome!
Breezy: I can vouch for Dallon. For months now, he's been going on about his friend, Jon Bellion, and how I've got to meet him. That's why he made us all come to Ohio.
Tessa and Tyler look at each other.
Hayley: Yeah, there's no way Dallon's the mole. He'd never work for Nico, after what he did to Jon.
Dallon: What does Jon have to do with-
Hayley, ignoring Dallon: You know who I think it is? Josh. He's awfully quiet, and I don't know what it is but to me he just seems suspicious.
Tyler: I'll have you know, Hayley, that Josh is one of the original six members of Team Awesome and would never even think of working with Nico.
Hayley: Perhaps that's exactly what Josh wants us to believe, Tyler. You're his best friend, and as long as you're the leader of the team he's not going anywhere. Quite genius, really, for Nico to use someone so close to you as his pawn.
Tyler looks at Josh suspiciously.
Josh: Dude, I'm not the mole!
Tyler: Yeah, I know you're not. Dallon for sure is, though. This whole "dorky dad" shtick isn't fooling anyone.
Dallon: What evidence do you have of me being the mole, Tyler?
Tyler: I DON'T LIKE YOU, DALLON! THAT'S MY EVIDENCE!
Dallon: Well, I never! Ryan, Breezy, kids, pack your things; we're going back to Utah on the soonest flight.
Tyler: Would you at least have the decency to admit to being the mole, you COWARD?!?!?
Dallon: Does anything penetrate that thick skull of yours, Tyler? I AM NOT THE MOLE!!!!!!
While everyone is distracted by Tyler and Dallon's shouting match, Brendon leaves and goes to his room. When he gets there, he calls Nico.
Brendon: Word got out that there's a mole, and it's absolute chaos here. They suspect Dallon Weekes, a pacifist from Utah, and Josh Dun, an Ohio native and original member of the team, but they've yet to figure out the true mole.
Nico: Excellent. I'll send men immediately.
Brendon: Copy. He hangs up. When he returns to the living room, the argument has gotten more intense, with Breezy now involved.
Breezy: Believe me, Tyler, if Dallon was the mole I'd know.
Tyler, doing his best impression of Hayley: Perhaps that's exactly what Dallon wants us to believe, Breezy. In his normal voice: Besides, you're probably in on the whole mole thing, too, being his wife and all.
Breezy: This is preposterous!
Amélie: Yeah, I'm with Mom.
Knox: Same.
Ryan: Breezy scares me, so I'm gonna agree with her.
Tessa: I agree. Dallon just doesn't seem like he would be the mole. Does anybody other than Tyler think the mole is Dallon?
Silence.
Tessa: I rest my case.
Suddenly, the base is under attack.
Tessa: Nico's Army. Get into formation, you guys.
The team gets into formation.
Tyler: Team, USE YOUR GLUTES!
They charge at the invaders. Awsten, who is either remarkably brave or remarkably stupid (or a hardy combination of the two), takes on not one but three of the invaders on his own and with no weapons. To everyone's surprise, he wins.
Tessa: Impressive, Awsten. You're off probation.
Awsten: You don't think I'm the mole?
Tessa: If you were, you're so stupid that you would have confessed to us by now.
Awsten: Hey!
Tessa: I'm not wrong.
Awsten and Tessa go back to fighting. Adam finds Knox lying on the ground injured.
Adam: You okay, Knox?
Knox: Obviously not.
Adam picks Knox up.
Adam: Man down!
Alba rushes to Adam's side.
Alba: He looks pretty bad. Give him to me.
Adam hands Knox to Alba, who brings him inside to the infirmary.
Breezy: This is your fault, Dallon.
Dallon: What?
Breezy: You heard me. Our only son is badly injured and might die, all because you chose vigilante justice over your family!
Dallon: You could have stayed in Utah with the kids if you wanted to, Breezy.
Breezy: No, Dallon. You'd been going on and on about how I've just got to meet Jon Bellion, and Jon Bellion isn't even here! He's probably dead too!
Dallon: You leave Jon out of this!
Amélie: At this point, I'm convinced that this Jon guy is a figment of Dad's imagination.
Dallon: Excuse you, Amélie, Jon is very much real and not a figment of my imagination!
Amélie: Keep telling yourself that, Dallon. Keep telling yourself that.
Dallon: Why, you-
He is interrupted by Alba coming back outside.
Alba: Good news. Knox is going to live.
Breezy: You got lucky this time, Dallon, but if something like this happens again I swear-
Alba: Breezy. Cool your jets.
Breezy: Sorry. Uh, thanks for saving Knox, Alba.
Alba: All in a day's work. Anyway, Ryry's girlfriend, Cat, just texted me saying she's moving in.
Dallon: Good for Ryry! I'm sure he hasn't seen her in a while.
Amélie: I'm just glad Knox is okay. I don't show it much, but I love that idiot, and I'd hate to lose him.
Dallon, Breezy, Amélie, and Alba all hug. End of episode. Roll credits.