Ben 10 and Star vs the Ultimate Forces of Evil

Chapter 18: Ultimate Aggregor

It was a few days after Aggregor attacked and took Ra'ad. Some Plumbers tried to ambush him but it didn't work. However One of the Plumbers was able to damage his ship.

At Mr. Smoothys Ben, Star, Kevin and Gwen were laughing and having a good time.

"How come we never do this as much anymore?" Ben asked. Then some girl started to cheer for Ben as well as some people with cameras showed up as well. "Oh, yeah. Now I remember."

"I never had this problem on Mewni." said Star

"I know I've got a laser cannon in here somewhere." said Kevin as he looked in the trunk of his car.

"Quit kidding around. And just get the car started. We have to go." said Gwen

"No. I'm staying right here until I finish this smoothie." said Ben. Then he activated the ultimatrix and hit it. "Big Chill!" Then he hit the omnitrix to go ultimate. "Ultimate Big Chill!" He shot out flames that quickly turned into ice to block them. Then Ben changed back to normal. But Ben couldn't finish his smoothie.

"What's wrong?" asked Star

"The moment is over. And besides, it's too cold out here." Ben turned over the cup and the smoothie was frozen solid. Then the ultimatrix started to beep. Ben pressed it. Then Grandpa Max showed up. Then Star ,Gwen and Kevin joined Ben.

"Grandpa Max, We're all here. Trouble?" asked Gwen

"I wouldn't have called you otherwise. It is a school night." said Max. He gave them the location to head to. They soon got there. Gwen used her powers to figure out what happened. After they questioned the Plumber there. "What do you got?"

"It's like he said. Aggregor was here."

"We set a trap for him, brought four squads of our best men. He took us down like we were nothing. I sense the missing aliens were here, too. Ra'ad, Galapagus, P'andor, Bivalvan. Andreas was here, too."

"He's alive?" asked Ben in shock.

"He was an hour ago."

"These are Aggregor's footprints. He must have brought Ra'ad with him. He stopped here to call his ship down. You can see where the Plumbers waited for him. Clocked?" asked Kevin

"Yeah. He didn't suspect a thing." said the Plumber

"But he was ready anyway. His ship fired on you guys from above. Looks like Radiation scoring on the debris. Tachyon cannons, probably. and over there..." The followed Kevin to a certain spot. "look at where the sand's shiny. That's from the transmat beam he used to travel up to his ship." This shocked Ben, Star, Gwen, Max and the Plumber. "What?"

"It's just you're, uh..." said Ben

"Smart." said Star

"Kid, I have never seen anyone work a crime scene like that. You have a future in law enforcement. On one side or another." said Max

"I've got to save those aliens from Aggregor." said Ben

"He's halfway across the galaxy by now." said Max

"Not in that ship he isn't. I shot out his hyperdrive. It was barely flying." said the Plumber

"Then it's leaking muon neutrinos. We can probably track it." said Kevin

They got into the Rust Bucket and flew of tracking Aggregor's ship.

"We're only a few hours behind Aggregor's ship." said Max

"Probably less. The rate it's leaking, he has to land for repairs." said Kevin

"But you've got a couple minutes to talk to me in private, right?" asked Gwen