The sun was shining brightly outside the Tennyson's RV, and inside, the air was filled with the usual chaos and energy of a family on the move. But today, the madness was coming from a very unexpected source: a cookie.

"Yesss!" Gwen said with a grin, her small chibi arms raised in triumph. "I've found the last cookie! It's all mine!" She held up the perfectly round, chocolate-chip treasure she had just uncovered from the bottom of Grandpa Max's cookie jar.

Her little face lit up with excitement as she carefully inspected the cookie for any crumbs. It was golden-brown and perfectly baked—too perfect to share.

Ben, also in his chibi form, appeared from the corner, eyes wide and filled with determination. "Hey! What do you think you're doing with that cookie? I saw it first!" he whined, his voice high-pitched in his little form.

Gwen narrowed her eyes, clutching the cookie close to her chest. "Oh no, no, no, Ben. You had your chance. You ate the entire box of cookies yesterday. This one's mine!"

Ben pouted, stomping his tiny feet. "That's not fair, Gwen! I was busy saving the world, remember? So that means I deserve the cookie more than you!"

"Saving the world doesn't give you cookie privileges!" Gwen snapped, poking him in the chest. "You can't just take everything, Ben!"

The cookie was now the center of a full-blown chibi showdown, with Gwen clutching it tightly like it was a priceless artifact. Ben was determined, tiny hands outstretched, ready to grab it from her.

"Let me have it! You're always hogging everything!" Ben shouted.

"No way!" Gwen responded, narrowing her eyes further. "I've been waiting for this moment all day, Ben. You can't just take it from me!"

Ben's eyes suddenly flicked toward the shelf, where he saw the Omnitrix. A mischievous grin crossed his tiny face. "Well, if I can't have the cookie, maybe I'll just transform into a super-powered alien and take it from you!"

Before Gwen could stop him, Ben slammed his tiny hand onto the Omnitrix symbol on his chest. In an instant, his body began to glow with green energy.

"Oh no, you don't!" Gwen yelled, reaching out to stop him, but it was too late. Ben transformed, but his chibi form remained—only now, he was a tiny, over-the-top, alien version of Four Arms.

"Ha!" Ben boasted, standing proudly in his tiny alien form. "Try stopping me now, Gwen!"

Gwen was furious, but she wasn't about to let Ben win this fight. "I'll beat you to the cookie, Ben!" She darted around the RV in quick, exaggerated movements, using her tiny agility to dodge Ben's clumsy, giant alien arms.

"Get back here, you!" Ben roared, chasing after Gwen in a ridiculously slow and exaggerated fashion, his four tiny arms swinging wildly, knocking over various objects on the counter and floor.

Just as Ben lunged forward to grab Gwen, she nimbly flipped over him, landing on the kitchen counter and getting closer to the cookie jar.

But before Gwen could claim her victory, the door to the RV swung open with a loud creak, and in walked Kelvin, chibi form and all, holding a juice box in his hand.

"Hey guys, what's going on?" Kelvin asked, looking at the scene of destruction—the cookie jar upended on the floor, cookie crumbs scattered everywhere, and Ben, in his alien form, clutching his tiny arms around Gwen in an attempt to stop her.

Gwen gasped and pointed. "Kelvin! Look, Ben's trying to steal the cookie from me!"

Ben, still in his Four Arms form, yelled, "I'm not trying to steal it! I deserve the cookie more than she does!"

Kelvin blinked at the commotion and then looked down at the last remaining cookie, now sitting right in the middle of the chaos, completely forgotten in the fight.

"Well, it looks like you two are making a big mess over nothing," Kelvin said, looking between the two cousins with a raised eyebrow. "You know, if you two had just asked me, I'd have taken care of it."

Before anyone could respond, Kelvin squeezed his juice box, gulped down the rest of it, and then, without any further warning, popped the last cookie into his mouth and chewed happily.

Ben and Gwen froze.

"Kelvin!" they both cried in unison.

Kelvin smirked, wiping a small crumb from his cheek. "What? You both looked busy, so I thought I'd take care of it for you."

Gwen's face turned beet red with frustration. "That was my cookie, Kelvin!"

Ben clenched his tiny fists. "You... you little sneak! That cookie was mine!"

Kelvin's smug expression remained as he patted his stomach. "Mm, that was a good cookie. Better than anything you guys could have done with it."

Ben and Gwen stood there, completely stunned.