Author's Note: I decided to skip over the Ember Island Players episode because it was kind of a filler and not much would change with the Totally Spies being there, so on to the Sozin's Comet finale.
Zuko was training Aang in Firebending. Aang was being trained on his roaring technique.
"If you want to beat the Firelord, you got to roar like a Tigerdillo." Aang gave out a weak roar.
"That was weak. Try harder!" Aang gave out the loudest roar possible. After his roar, Clover handed out some pineapple smoothies of some sort.
"Who wants Pineapple Mango Smoothies!" She handed out hollowed out pineapple shells with mango and pineapple juice mixed in the centers.
"Ooh, me!" Aang ran to get a taste, but Zuko yanked him back.
"Our training's not over." Zuko told Aang. "We still need to work on some high-level moves."
"Aang, it would be good to take a break." Alex suggested.
"Why are you all sitting around when the comet is in three days?" Zuko questioned.
"He's right." Clover had an idea. "Why sit around when we could have a BEACH PARTY!" She pulled a boom box out of her heart backpack, and it played "Girlfriend" by Avril Lavigne. Katara made an ice surfboard from water and surfed on the water. Clover used her Swiss Army Comb to build a sand sculpture of the three Spies together. Alex used her trick makeup brush to sculpt a statue of the WOOHP HQ. Sam used her trick makeup brush to sculpt a replica of Beverly Hills High. Aang sculpted an Appa statue, Toph used Sandbending to make Ba Sing Se, and Sokka used whatever he could find to make a super deformed replica of Suki. Zuko got mad and was shooting fireballs at everyone's sand sculptures, including the Spies'.
"What's going on?" Katara wanted to know why Zuko went berserk.
"Zuko's gone crazy!" Sokka explained.
"Let's go, girls!" The Spies were in hot pursuit of Zuko when he chased Aang. Alex used her Airspray to knock Zuko over, while Sam used her Diamond launcher to pin Zuko down. Clover used her feminine wiles to attract Zuko.
"Hey there, handsome, would you, like totally go out with me if you stopped going crazy?" Clover was hitting on Zuko.
"Ok, fine, I will stop attacking Aang, but I won't go out with you, not while the Comet is three days away."
"Listen up." Zuko called everyone to attention. "I have an announcement to make." Zuko began. "PRISM has hooked the Fire Nation up with heavy missiles, as what Iroh sent me via messenger hawk. They will use the missiles to destroy the Earth Kingdom as we know it so they can build a second Fire Nation over it."
"I thought Ozai was a monster, but this is pure evil." Sokka reacted.
"If I am going to face the Firelord, I have to do it alone." Sam got a call from Jerry.
"Yea?" Sam answered.
"Hello, I wanted to inform you about the Firelord situation." Jerry was about to tell Aang something. "According to our intelligence, Aang is an Air Nomad, whose culture is based on pacifism." Aang took the mirror phone.
"How can I defeat the Firelord without taking his life?" Aang asked Jerry.
"Not to worry." Jerry had an idea. "I will deliver you a gadget that will block Ozai's bending completely, and then WOOHP will come in and arrest him."
"Well, looks like I got it covered." Aang looked at Clover.
"Don't feel bad about it, we don't kill villains all the time." Clover gave Aang some encouragement.
"This isn't some throwaway supervillain from your world that we're dealing with." Zuko reminded Aang of the magnitude of the Firelord as a threat. "This is the Firelord we're talking about. As the Avatar, you must put your values aside, and if it means bringing balance to the world by killing him, you should do that."
"I need some time to think." Aang walked away. He walked along the beach into the water and never came back.
Moments later, Sam made a coconut crème pie for Aang. She was going to give it to Aang, when she realized Aang was gone.
"Aang has gone missing!" Sam alerted everyone. "We have to find him!"
"This is weird, because he left Appa behind, and if he was going on a spirit journey, his body would still be here." Katara noticed that Aang left Appa behind for some reason.
"If anyone has experience hunting the Avatar, it's going to be me." Zuko had an idea. "Everyone on Appa!" Zuko got everyone on Appa, including the Spies.
"Yip-Yip!" Zuko commanded. Appa soared off the ground in search of Aang.
"Not telling you to do your job, but why are we headed towards the Earth Kingdom?" Sokka wanted to know why Zuko was headed towards the Earth Kingdom.
"I know someone who can help find the Avatar. He headed towards a small tavern in the Earth Kingdom and found a familiar face, Jun, the bounty hunter who worked for the Fire Nation. A familiar face was with her, and it was Mandy.
"Mandy!" Clover was disgusted when she saw Mandy. "I knew you were behind this!"
"Oh, look, it's Clover and her little cheerleader squad." Mandy taunted. "You know you're pathetic when you have to go through a portal to get that many friends." Jun grabbed Mandy by the throat.
"Pipe down, will ya?" Clover's eyes began to shine when she saw Jun tell Mandy off. "Let a real woman do the talking." Clover shook Jun's hand.
"Oh wow, I love you so much!" Clover wanted to know more about Jun. "What is your name?"
"Jun." Jun introduced herself. Mandy was getting mad when she saw Clover bonding with Jun.
"So, can we grab a coffee sometime?" Clover wanted to hang out with Jun, proud of her when she told Mandy off.
"I would, but the reason why Zuko came to see me is that I can assist you in finding the Avatar."
"Then why is Mandy here?" Alex wanted to know how Mandy got here.
"I have a contact in PRISM that hooked me up with a special phone that can access PRISM surveillance camera drones that could locate the Avatar." Mandy told Alex.
"Very well then." Alex agreed. "If working with Mandy can help us find Aang, then we work with her!"
"The spies will hop on my PRISM Jet while my girl Jun and the others will hop on board that furball of yours that's parked outside."
"Hey, don't talk about Appa like that!" Katara got mad at Mandy. Mandy and Katara butted heads while a spark of lighting charged between their angry faces.
"That's enough!" Zuko interjected. "We're all on the same team here." Zuko broke up the fight before it started. Both teams went their own ways to find Aang. Mandy went with the Spies, while Jun went with Team Avatar. Jun slapped the reins of Appa, searching for Aang's location.