When Ben gets sick he is pleased to see an old friend, Tetrax, but is caught off guard when Tetrax demands Ben give him Chromastone. Tetrax changes Ben into Chromastone but instead showed Diamondhead. Ben doesn't even have a chance to explain what happened to Chromastone when Tetrax attacks him demanding that he be handed over. Tetrax shatters Diamondhead and reveals Chromastone inside. Chromastone soon flies to Petropia, Tetrax's homeworld. Tetrax soon explains about why he needs Chromastone, (his planet was destroyed) he tells Ben, Gwen, and Kevin about Chromastone being the only one to save Petropia with a crystal. Ben's situation gets worse when Vilgax shows up and it is learned he is after the crystal. Ben, Gwen, Kevin, and Tetrax fight Vilgax until Kevin accidentally tells Vilgax whats going on. Vilgax flies to Petropia, while Ben, Tetrax, Gwen and Kevin go aboard Tetrax's ship and fly to Petropia. Vilgax soon arrives to Petropia and fights Chromastone. Ben, Gwen, Kevin, and Tetrax arrives to Petropia and protect Chromastone. Vilgax grabs the crystal off Chromastone and flies back to his planet.Chromostone grows another Crystal and gives it to Ben. Ben soon turns into Diamondhead and climbs to the 상단, 맨 위로 of Petropia to continue reviving Petropia with the crystal Chromostone gives Ben. After the people of Petropia live, Chromastone reveals that his real name is not Chromastone (since that was what Ben named his Omnitrix Crystalsapien) but is Sitilite. Sitilite continues to stay on Petropia and be the protector of Petropia but leaves some of Chromastone's DNA in the Omnitrix. Tetrax later flies Ben, Gwen, and Kevin down to earth, promising revenge on Vilgax. Meanwhile, Vilgax catches Ben's cold.

NOTE: In this episode, Ben regained Chromastone's DNA, and still have the Diamondhead's DNA, which made Chromastone and Diamondhead a different alien to choose.

So when it starts off in the car, I thought Ben was actually hurt. They were rushing like it was a real emergency and it turned out funny when they arrived to Mr. Smoothy. I guess to Ben, smoothies are a life 또는 death situation.
Ben's voice was concerning to me. I know he was sick, and when 당신 are sick your voice sounds a little different, but his voice was dramatically different. I almost didn't think it was Ben, but maybe that was just me.
Does Kevin really go to anger management? It was funny when Gwen said that, and Kevin could use anger management, but I'm questioning if it's true he goes 또는 not. It could have just been for the comedy of the show.
This is the first time Ben got sick with his aliens in Alien Force! We haven't seen him this way since the original series. He was sick with Humongosaur, so that was new to see-even though it was just a really bad sneeze on Kevin's car. In the original series we saw Diamond Head be sick when Ben got a cold, so that wasn't new.
At Mr. Smoothies, Kevin breaks out a family cure! It's nice to see he knows some of his family stuff. He isn't totally oblivious to his family history. Then a small random-funny moment when Gwen knew what Ben was talking about and Kevin said (randomly) that she should be a dentist.
Then a ship lands near them-the 3D! Throughout the whole episode there is so much 3D graphics with all the vehicles and ships. It was really consistent, even with the simple scenes like Kevin's car.
Tetrax is in the ship! We haven't seen him in about...forever. Since the original series. He acts very rude and mean, and tries to get Chromastone from Ben. There was some bad directing when Tetrax grabbed Bens arm and was activating the Omnitrix; they didn't show Ben struggling to get Tetrax off and away from him like they should have.
Another funny moment 의해 Kevin was when Kevin told Ben to use a tissue when Diamond Head sneezed. They're diamonds. A tissue ain't holdin' them back.
It was really disturbing when Tetrax was, like, probing/destroying Ben with that alien tech. It was really creepy, then wierd when Ben was on the ground as pieces of Diamond Head and Chomastone was seperate. Then, Chomastone has powers Ben doesn't know. After all this time it's hard to believe Ben doesn't know all there is to know about the aliens he has had for so long, but it's possible and shows Ben has 더 많이 room to grow.
Putting Ben back together (or trying) was funny. this was the point where I thought this episode was pretty funny; not lauging-so-hard hilarious, but funny with the little funny moments through the episode.
Ben then thinks that a silicon based life form doesn't get sick with colds, but thats just 더 많이 he doesn't know/realize. Tetrax has never gotten sick because he is a silicon based life form and they don't get sick. Diamond Head was sick because humans can get colds, and whenever Ben turns into one of his aliens, he is still half human. Ben should, and I'm pretty sure does, know this. He must be dillusional without smoothies.
We then find out that Tetrax wants to redeem himself for what he did to his planet. In the movie 'Ben 10: Secret of the Omnitrix' Tetrax tells be the story of how he destroyed his 집 planet when he was working for evil life forms like Vilgax. Chromastone can fix Tetrax's mistake. It was unprofessional and down-right uncool of Tetrax to just take Chromastone without properly conversing with Ben.
But now Vilgax comes. In season three, we are seeing A LOT of him. It is most likely foreshadowing the season finale.
Of course the team and Tetrax start fighting Vilgax, and Tetrax takes control of the battle. After trying to fight a while, Tetrax sees that things aren't working for the team and he calls the teens to fall back. Knowing the team, they would have kept fighting, so this shows some growth and need of better leadership in the teen plumbers. Although I believe Ben would have figured something out eventually.
The episode scene now switches to Chromastone in outer 우주 putting Tetrax's planet back together. Chromastone is smiling and seems very happy; it's an uplifting little scene and it's pretty with all of Chromastone's powers.
Back on earth, they are figuring out a plan and Gwen's powers are again jacked. She get 더 많이 powerful every episode; there is always a progression in her powers.
Then ew Kevin gets in his disgusting sneeze on car with a plan. His plan was to make a dust 구름, 클라우드 to escape Vilgax, and it works. They all disappear to a few miles away from where they were, and who knows what kind of crazy stuff the pulled to do that. I have no idea how they could do that at all.
At the building they appear in, crawling out from what looks like a sewer, Kevin talks again. I've noticed lately that Kevin sometimes sounds kinda wierd. Maybe Cipes was sick? (Greg Cipes is Kevin's vioce.)
Ben gave away their location right away because he sneezed, so that whole escape was pointless. Kevin joins Ben in the secret reavealing and tells Vilgax that Chromastone is somewhere far away in space, so then Vilgax leaves. Another funny moment is when Ben and Kevin tell Tetrax to listen to Gwen and not argue because there would be no point. Lol, they know 의해 now.
They then go into 우주 to find Chromastone and Vilgax again. Vilgax left eventually because he lacks knowledge; he just wanted the Chromastone crystal. Vilgax doesn't know the secret of Chromastone.
When they find Chromastone, Gwen cries because Chromastone appears dead. Gwen is crying a lot lately. Chromastone then comes to, and 'passes the torch' (his chromastone) to Ben because he is too weak. Also, he is revealed as Sitilite, not Chromastone and that Chromastone is still in the Omnitrix.
Of course Ben is to complete the mission and save another world. He turns into Diamond Head and climbs the crystal mountain to where the stone needs to be put. It's really good how they show the struggle of Ben getting up the mountain. I really like how it wasn't just him climbing the mountain fast and getting up there with ease. That was good.
Ben of course gets all the people back to the planet; which it was dissapointing seeing no variation in the Diamond Head people. And that they all looked boring doing the same fist-pump cheer at the end when they were all back. Ben now waves his hands up and has the 'who's your hero' face on. Gwen and Kevin realize that they'll never hear the end of this mission either.
Tetrax then tells Ben that he wants to fight Vilgax, which Ben, being smart, 질문 if Tetrax is sure 또는 not.
The episode ends funnily at Vilgaxia, with Vilgax catching Ben's cold.