After stuffing their faces with gyros, Team Tennyson makes their way to the real Greece in the Omni-Copter, but when they are suddenly captured by the Forever Knight mid-flight, Ben ends up in a coliseum, where he is pit against old foes: Iron Kyle, Queen Bee, The Tri-Chefta and the Ground Hawgs!
The episode begins with the Tennysons exiting a Gyro restaurant, and Ben and Gwen arguing over how to pronounce "Gyro". They fly off in the Omni-Copter, and they are soon abducted by a second copter, owner unknown. Ben is ready to fight, however all three Tennysons are taken easily by Forever Knight's guards. They are put into a prison. They question who those guys were. Ben prepares to transform, however he is somehow locked out of the Omnitrix. The Guards step back in, Max demands to know who they are, however he is thrown to the side. They pick up Ben takes him to the arena. Steve and Bill announces what's going do. A drone flies in welcoming Ben to the arena. Forever Knight steps in and sits in his seat. Ben is released by the guards, and is trapped in the area. Ben looks around, and notices that the audience is filled with robots. The drone states that there is only one way out. Ben wants to escape, and save his family. The drone shows him a video of his family, and tells him that if he wishes to see them again, he has to fight. Ben is prepared and the first opponent enters.
Iron Kyle steps out, with new armor prepared to fight Ben. Steve states that the armor is a contribution to the host - Forever Knight. Kyle runs towards Ben, and jumps up and does an elbow drop. Ben dials up Humungousaur, and kicks him. Iron Kyle manages to put Humungousaur on the ground. Forever Knight motions for a weapon shelf to pop up, and Iron Kyle selects a sword. As he prepares to finish of Ben, he uses his tail and brakes the sword. Humungousaur throws Iron Kyle elsewhere. The next challenger arrives, Queen Bee. Ben times out, and runs away. As she chases him, he times back in, and stops her using Diamondhead. After that, the alien chef trio steps in, and Diamondhead beats them easily. Then the Ground Hawg Gang drives in, but they are also defeated.
The Guards throw Iron Kyle into a cell, with Max and Gwen. Gwen asks him what's going on. Kyle states that a few days ago, some 'armored guy' asked him if he wanted to get even with Ben. He tells them there were also groundhogs, and a bee lady. Max and Gwen knows who they are, and suggest that someone is pitting Ben up against his old foes. Gwen questions if the 'armored guy' called himself, Forever Knight. Gwen asks Kyle to help break out of there. He eventually agrees after thinking what may happen to him when the tournament ends.
Back at the arena, Ben defeats all of his opponents, and demands to leave to the Forever Knight. Forever Knight states that those were only the opening acts. Bill and Steve introduces the one, and only, Kevin. Ben predicted it being Kevin, and states that he can't believe he's still working for the Forever Knight. Kevin and Ben transforms, Ben tries to talk Kevin out of working with the Knight, however he ignores him, stating no one tells him what to do. Kevin transforms into Quad Smack, and Ben transforms into Shock Rock. Back in the prison cells, Max, Gwen, and Kyle manages to break out, however Kyle abandons them after. In the arena, Shock Rock fights off Quad Smack easily. He then runs away, and one of the robots throws his drink. Shock Rock gets back up, and dodges Kevin's hits. Forever Knight demands for him to stop avoiding Kevin, however Ben says no. Forever Knight then raises the states. Both Shock Rock and Quad Smack are vulnerable to being hit. The laser hits the ceiling, dropping rocks on Quad Smack. Shock Rock, however, saves him. Max and Gwen flies in with the Omni-Copter, and Ben runs towards it. He offers for Kevin to come with them. Kevin looks towards Forever Knight and then tells him to get out while he can.
Kevin goes up to the Knight, asking what's his problem, due to him almost being killed by the arena. Forever Knight states that "you can't make an omelet without breaking a few eggs", and tells him that he was pulling his punches.
Iron Kyle, Queen Bee, the Alien Chefs/Tri-Chefta, and the Ground Hawg Gang return.
Max: I don't know who that is, but I like what they did with that paint job.
Ben: It's gyro time!
Kyle: This isn't the VIP lounge. Where's the seafood buffet you promised? Guard: Buffet is for winners. Kyle: Does that mean no frittatas? Gwen: Afraid so, Kyle. What's going on here. Kyle: Well, I was told they were taking me to the VIP lounge, and I was going to get... Gwen: In the arena, Kyle! Kyle: Oh, Oh, that. Well, a few days ago, some armored duded asked me if I wanted a chance to get even with Ben, settle the score. He brought me here, and I saw all these weird people like a bee lady, some grouchy gophers on motorcycles. Gwen: Ground Hawgs? Max: Queen Bee. Kyle: You know these people? Gwen: Sort of. They all have a score to settle with Ben. Max: Hm, sounds like someone is pitting Ben against all his old foes. Gwen: Did this dude call himself Forever Knight? Kyle: Yeah! Yeah, that's it. What's that mean anyway? Gwen: Beats me. You have to help us break out of here. Kyle: Whoa, whoa, whoa. Remember, I'm in the bye-bye Ben club. Why should I help you guys? Gwen: You're in here because you lost. What do you think is going to happen to you when the tournament is over? Kyle: Good point.
Bill: Ladies and Gentlemen, the moment you've been waiting for. I present to you the main event! He's the dud with the 'tude... Ben: Kevin. Bill: ...the tween tornado... Ben: It's definitely Kevin. Bill: ...The one and only...Kevin!
Kevin: What's your problem? You could've fried me out there. Forever Knight: Don't be such a child. You can't make an omelet without breaking a few eggs, and next time, don't pull you punches.