Previously…
Kai and Ben defeat Zs Skayr. The rest of the team discover Vilgax hates fire, but they also find out that his armour makes him strong is made by the Orishans.
Kiusana…
For once, the ship actually landed. Maybe it's because they didn't jump out? But anyway, the ship landed on the Water Hazard planet. Out of the ship, came a revonnahgander plumber, and an Orishan. "Ben," the revonnahgander, Rook, said, "Why an Orishan?" Water Hazard shrugged, "To fit in." Rook nodded, "Come on, Ben," he replied, "Let's find us a city." Ben and Rook started trekking.
Meanwhile in Plumber Base…
Be cool. Gwen thought to herself. Lucy, a plumber, and Gwen's cousin, ran up to Gwen. "Hey, Gwen!" she exclaimed, embarrassing Gwen. "Hey, cous," Gwen said quietly. "How was Vilgaxia?" Lucy was practically screaming at Gwen. "Good," Gwen answered, "Good. How was Undertown?" Lucy shrugged, "It was only Psyphon." Gwen faked a laugh, then replied, "Let's go do… something?" Lucy nodded, chuckling to herself, "Yeah," she agreed, "Let's go…" Gwen led Lucy away through a door.
Meanwhile in Undertown…
Kai and Ester crouched down on top of a pipe, watching over Undertown. "Are you sure Looma's going to be here?" Kai asked. "When am I wrong?" Ester chuckled, as a red-gold ship passed by beneath them. Ester nodded, as Kai rolled her eyes, before jumping down onto the back of the ship. Inside the ship, Looma could hear footsteps, so she put her foot down on the brakes. Surprised, Kai and Ester fell forwards. They helped each other up, and jumped off the ship. Looma got out, turned to face them, and then got back in the ship, and drove away, leaving Kai and Ester in shock. "Well, come on!" Kai yelled to Ester, as they started sprinting.
30 minutes later…
"Finally!" Ben exclaimed as him and his partner made it to a city. It was big and beautiful. Ben walked towards it, but felt a wall. Rook chuckled to himself, "The Orishan's cities are like fish tanks, Ben. You don't go in that way." Ben sighed before asking, "How do you get in, then?" Rook thought for a moment before replying, "I have no idea." Rook sprinted around the city, before coming face to face with a Water Hazard. "Hello," Rook said to the Orishan, "I am Rook. Please let us into the city." The Water Hazard nodded, and a gate opened. Ben and Rook stepped in, and the door shut behind them. "We're in!" Ben exclaimed, "Well done, Rook… For once…" Rook grunted. Suddenly, hoses appeared and sprayed the two off-worlders. "Hey!" Ben shouted, as the hoses stopped. He reached towards the omnitrix, but Rook stopped him. The door opened, and the two plumbers stepped into the city. An Orishan ran up to them. "Greetings," she said, "I am Alma." Rook held out his hand. As Alma shook it, Rook replied, "I am Rook, a revonnahgander, and this is Ben Tennyson, the human who can transform into aliens." Alma stared wide-eyed at Ben, before asking, "Why are you here?" "We need to know the weakness of your armour," Ben replied. Alma sighed. "This way," she answered, gesturing for them to follow her. They followed her to an arena. "First, you must prove your worthiness," Alma said, as they all stopped outside the arena. Rook put his hand up to volunteer, but quickly she continued, "I think Ben should do it." Ben gazed at Rook, before bursting into laughter.
Meanwhile…
"Gwen?" Gwen recognised her name and walked towards it. It was Lucy. "What is it?" Gwen asked. Lucy pointed up. Gwen gasped. "Hey Gwenny!" "Sunny…" Gwen shot mana at her, but Sunny dodged, and got stuck in Lucy's mud. Gwen stood in front of Sunny. "Why are you here?" Gwen asked. Sunny shook her head. Lucy tightened her grip on Sunny, as she growled. "Fine!" she exclaimed, stopping Lucy tightening her anymore. "I'm here because of Vilgax!" Gwen sighed, "You know he's a squid faced jerk." "I know," Sunny replied, "But, he promised me…" "Promised what?" Gwen wondered. "Promised to keep Albedo." "Why?" Gwen asked. Sunny sighed, "Vilgax took Albedo from me, mindwiped him, and he won't let him go, if I don't bring a plumber captive." "We can help, Sunny," Gwen said, "Please trust us. When Ben and Rook come back, we can get ready to invade Vilgax's ship." "You'll do what?!" Lucy screamed. "I have a plan," Gwen said, smiling, "Sunny will take the team up as captives. Then, you will have Albedo back, and we'll defeat Vilgax. Deal?" Gwen held out her hand. Sunny sighed. She knew the only way to get Albedo back would be to trust her cousin. Sunny took her hand and shook it firmly.
Meanwhile…
Looma stepped out of her ship, and went to open her private garage in Undertown. When she turned around to get materials from the ship, she was staring at Kai and Ester, growling. Looma used two arms on each girl, but they both ducked, making Looma run into the ship. Ester and Kai both kicked from behind, leaving Looma on the floor. "Yes!" Ester and Kai high-fived each other. "We should do this more often," Ester said. "I think we can…" Kai suggests.
10 minutes later…
Ben stood at one end of the arena. An Orishan stood at the other end. Over the loud speakers, Alma boomed, "Ben Tennyson VS Jim of the Water! 3… 2… 1… Fight!" Jim charged in for Ben, but he changed into Terraspin. Jim shot water at Ben, but he started spinning, reflecting the water and splattering it over Jim. Jim growled, and slid under Terraspin, shooting him in the back. Ben changed into Diamondhead and threw crystals at Jim, but he dodged them. Diamondhead soon became Upgrade. Upgrade swarmed around the Orishan and then hacked into his armour. Upgrade made the armour drop to the ground, and a water creature appeared out of it. Ben quickly transferred his form into Articguana and froze Jim. Ben returned to normal form, as Alma and Rook approached him. "There's your answer," Alma said, probably smiling, but she was wearing her armour, "But you should probably save Jim…" "Oh right!" Ben remembered, transforming into Swampfire, and melting the ice. As Alma ran over to help Jim, Rook handed Ben his phone. "Missed call from Kai," Rook said, sighing. Ben called Kai. After three rings, Kai picked up. "What did you want?" Ben asked. "I'm leaving the team. I'm sorry. We can still hang sometimes though," Kai said. "Okay," Ben sighed, "Be careful." "I will," Kai sighed, "It's you who needs to be careful." Before Ben could object, Kai hung up. "She's left the team, Rook," Ben said. Rook patted him on the shoulder, "There, there," he said, as Ben facepalmed.