(Our heroes decide to cool off at large water park, featuring an enormous water slide.)

Ben: "Six stories of twists and turns!"

Gwen: "Hurtling down a 200 foot plunge!"

Zack: "At speeds of over 25 miles per hour!"

Kelly: "Then, splash down in a churning 300,000 gallon wave pool!"

Quintet: "You've entered The Riptide Rapids Zone!"

(The quintet then high-five and put on their water tracks before racing off to slide down the water slide. However, as they run pass the entrance, the employee stops Ben.)

Employee: "You're too short."

Ben: "WHAT are you talking about?"

(The employee points to a narwhale height meter with Ben being just under the height limit.)

Zack: "Ah really, dude. That's not fair."

Cass: "Yeah, let him in."

Employee: "Sorry, but rules are rules."

Gwen: "C'mon, guys. We'll catch up with Ben lately."

(Zack, Gwen, Kelly and Cass gets in line for the slide as Ben walks away and hides behind cover so he can turn into a certain alien that is tiny.)

Zack: "If this was based off age, Ben could definitely ride with us."

Cass: "It would be more fun."

Gwen: "Come on, guys, we're next."

(As the quartet sit down at the top of the water slide, Grey Matter can be seen sitting in between Kelly and Zack.)

Grey Matter: "Hey! Race you to the bottom!"

(They both slide down. Grey Matter yells with excitement as he slides through the tunnels. He then eventually splashes in the ending pool.)

Grey Matter: "Now, that rocked!"

(The quartet confronts Ben.)

Zack: "I knew you would do something like this. Using your watch to turn into Grey Matter and not get spotted by that employee... Pretty clever. A bit petty, but clever."

Gwen: "Even so, Grandpa's not going to like you going alien just to sneak on a ride!"

Grey Matter: "That's why I'm not going to tell him. In a few minutes, I'll be back to normal, and he'll never know, will he?"

Zack: "Guess again, genius. Don't forget, you're not the only one who's on the same playing field." [He holds his Ultimatrix up to prove his point.]

Cass: "Come on, guys. Let's dry off and get something to eat."

(As the kids get out of the pool to dry themselves, they hear Ben's scream their names and when they turn around, a man with brown hair and wearing glasses is running with Grey Matter in a cooler net.)

Zack: "Hey, you!"

(The man sees Zack and took off running with Grey Matter in a cooler. Zack chases after him with the girls following behind. They get out of the water park and saw the man drive away.)

Kelly: "Damnit! Where's he going with Ben?"

Max: "Don't worry, kids. We'll find him. Let's head back to the RV and follow him."

(The group are now driving down the road following the man and looking for Ben.)

Gwen: "OK, so if he's Grey Matter now, he'll just turn back into Ben...then go Four Arms or something and escape."

Cass: "But shouldn't he have turned back before that man took him?"

Zack: "He should've. It's possible that something is wrong with the Omnitrix."

Kelly: "At least he's smart as Grey Matter."

Zack: "If only that intelligence over to normal Ben, then he would think twice about using his powers for personal gain."

Max: "Now, Zack, try not to be so hard on him. From what you told me, it was pretty unfair for him to not be able to go down the water slide. What would you have done in his position?"

Zack: [sighs; shrugs] "Point taken."

(Gwen's phone suddenly rings.)

Gwen: "Hello?... Ben! You're still Grey Matter!... Where are you?... Brilliant! How about a street?... Ben! Something happened! He's on the street called Ripley."

Kelly: "Ripley? Where's that?"

Cass: [She pulls out a map of the area.] "There's three different roads called Ripley. We don't have time to check them all."

Zack: "Then you guys search on the surface, I'll search from the air."

Max: "Got it."

(Zack gets out of the RV and closes the door before the RV drove off, leaving the boy alone in the road.)

Zack: "It's time to go chill. Hehe. Nice."

(Zack activates the Ultimatrix and slams it, transforming into Big Chill.)

Big Chill: "Big Chill."

(Zack then flies in the air and search for Ben.)

Big Chill: "Is it just me, or does trouble follows us around. Wait, what's that?"

(From above, Zack sees the man that took Ben being escorted into a car by armor clad strangers.)

Big Chill: "Jackpot."

(Zack followed the car to a large castle, where he saw the man take Ben, who's in a small energy cage still as Grey Matter, inside. Zack went intangible to phase through the walls. He silently followed the man to a large room with who appeared to be their leader sitting at a large desk.)

Big Chill: "Sorry, fellas, but I'm here to bring Ben back. Time for a jailbreak."

(Zack flew down and grabbed the energy cage with Ben inside from one of the armored men.)

Big Chill: "My apology, gentleman. But this one's a friend of mine and I'm taking him back. You have my thanks, though."

???: "My, my, this is a surprise."

Big Chill: "And who are you suppose to be? Some kind of King Arthur's Knights of the Round Table?"

Enoch: "Close, but no. I am Enoch, and I am the leader of the Forever Knights. Now, I recommend you surrender and give that cage to me."

Big Chill: "Interesting offer. But I have a better idea. Now you see me..." [Turns invisible] "Now you don't."

(While being invisible with Ben, Zack flies and phase through the walls of the castle until he comes across a large vault filled with alien tech, where he sees Max and the four girls sneaking around.)

Grey Matter: "What are they doing here?"

Big Chill: "Let's find out."

(He flew down to them, unintentionally scares the girls.)

Gwen: "Zack, there you are. God, you scared us."

Big Chill: "Sorry about that."

Max: "Here, Ben, let's get you out of here."

(Ben, now free from the cage, looks at all the alien tech and gets an idea.)

Grey Matter: "Guys, we gotta destroy this place."

Kelly: "Hell yeah! How do we do it?"

(Ben sees what appear to be a large alien generator in the center of the room.)

Grey Matter: "Cass, Bro. The two of you need to blast that hyper-nova generator at the same time. Can you do that?"

Big Chill: "Got it. Ready, Cass?"

Cass: [nods] "Yeah."

Big Chill/Cass: "3... 2... 1... Now!"

(Both Cass and Big Chill blast the generator with Big Chill's Ice Breath and Cass's Magic, causing it to overload. As the group races out of the castle, the entire castle gets blown to kingdom come.)

(Outside, overlooking the remains of the castles, Ben and Zack changes back to normal.)

Max: "Come on, kids. Let's hit the road."

(Our heroes gets back on the road, relaxing.)

Ben: "Ah, feels good to be big again!"

Gwen: [scoffs] ""Big"? Get real, shortly."

(Zack and his Harem chuckled.)

Ben: "Don't make go Four Arms on you!"

(The Omnitrix suddenly sparks with red electricity.)

Ben: "I-I didn't do anything!"

Zack: "What's up with the Omnitrix lately?"

Gwen: "We so have to get that fixed."

(Ben looks at it, worryingly.)

(Fade to black.)