While Zim was walking home from school, he wondered what he was gonna do about Dib's Halloween party of doom.

As soon as he walked in, he saw GIR on the couch watching T.V. His favorite show, "The Angry Monkey Show" wasn't on, so he settled for watching a commercial for Krazy Taco.

"Tacos!" GIR yelled.

Zim sat down next to GIR to watch the Krazy Taco commercial.

"I love this show," GIR said as it was ending.

As Zim started to leave the living room, another commercial came on.

"Stop right there!" the announcer on T.V. yelled. "If you need a costume for Halloween, come to Costumes R Us and get them before they're gone!"

Zim turned the T.V. off and started for the door.

"Where are you going?" GIR asked.

"I need to go out and get a costume for Dib's Halloween party," Zim answered in a hurry.

"Can I come?" GIR asked with big pleading eyes.

"Oh, fine. You can come."

"Yay!" GIR yelled.

Zim started for the door, but GIR had other ideas.

"GIR, what are you doing? Come on!"

GIR had sat down in the middle of the living room.

"But Piggy wanted to come. We can't leave without Piggy," GIR explained. "We have to wait for Piggy."

"But-," Zim started to say.

"My Piggy!" GIR cried. Zim remembered how persistent GIR can be when he doesn't get his way, so he tried to reassure him.

"No, no. Of course we'll wait for Piggy. Piggy can come," Zim said quickly.

Zim sat down on the couch to wait it out. After an hour had passed, he had fallen asleep, but GIR still wasn't ready. Another hour later, he finally woke up.

"GIR, wha-what happened?" Zim asked.

"You fell asleep waiting for Piggy. He already came. See?" GIR pointed to the pig sitting next to him. "Say 'hi', Piggy!" GIR yelled at it. Piggy just blinked. "SAY 'HI', PIGGY!" GIR yelled again. "Oh well, never mind," GIR said innocently.

"Okay th- Wait! Why didn't you wake me up? By the time we get to Costumes R Us, there'll be no more costumes left and-," Zim looked at GIR, who had started to cry. "Oh, well it's okay GIR. Um, we can still go to the Halloween party," Zim said in an attempt to make GIR feel better.

"Yay! Party!" GIR yelled.

Zim just rolled his eyes and together they finally went to Costumes R Us. But as Zim predicted, they were almost all out of costumes.

"Hey kid. Didn't you notice? There's no costumes left. Go home," an employee said to Zim.

"Nobody tells Zim to go home! Now tell me where the costumes are!" Zim yelled.

"Uh... there's only one costume left. It's in the back," the employee said in a bored voice.

"Take me there!" Zim demanded.

"Um... okay then," the employee said blankly. He walked over to a closet and opened it. A mess of feathers, a beak, and a pair of eyes stared back at Zim from an otherwise empty clothes rack.

"What is that?" Zim asked in a disgusted tone.

"The costume. So... do you want it?"

Zim stared at it. It stared back.

"What is it supposed to be?" Zim asked.

"A chicken. Look, you can have it. Just take it. We were gonna throw it out anyway," the employee said. "Look, do you want it or not?"

"Fine, I'll take it! You annoy me filthy human!" Zim screamed. "GIR, let's go!" Zim ordered.

GIR rushed over to Zim's side. "Yes sir!"

Zim grabbed the costumes off the clothes rack and headed for the door. GIR was sitting on the floor wagging his tail. The employee just stared.

"Uh, did that dog just talk?" he asked wearing a shocked expression.

"Maybe," Zim said quickly. "GIR! Activate your jet packs!" Zim ordered.

GIR listened and started floating above the ground. Before Zim boarded GIR, he turned to the Costumes R Us employee, glared at him, then hopped on GIR's back and left him in shock of seeing a dog fly.