Squad 13 face something they've never seen before.
Nana: How's the status on Klaxo-Pandon?
Ichigo: Its still burning. Apparently, its hotter than before.
Miku: It's like its gonna fry us.
The beast then shoots out it's fireballs at them.
Ikuno: Woah!
Kokoro: Ah!
Zero Two: Damn it! We need to figure out how to beat this thing already!
Ichigo: She's right. If only we know its weakness.
Then, Orb appears.
Orb: My name is Orb! I light up the darkness and strike at evil!
Ichigo: Orb! You need to help us. We don't know how to beat Klaxo-Pandon!
Orb: Don't worry. I'll take him!
Orb throws the Sperion Light Ring at the beast but it didn't work. Then, he makes a bigger one and throws at it. But it didn't work either. So he decided to use his speed to create after images to surround the beast and uses the Sperion Ray. Unfortunately, it didn't work too. Then, color timer on the ultra's chest begins to flash red, implying he's using too much energy.
Orb: Oh no. I don't have much time! Looks like I have to send it to space for now.
Orb summons the Sperion Shield below the beast and sends it to space. Unfortunately, the ultra's energy has depleted which cause his body to fall back on Earth.
Ichigo: Orb!
Orb's body then falls on the ground.
Zero Two: Orb!
Squad 13 tries to check on Orb if he's okay. But, when they look into it, he's gone.
Kokoro: Wait, where did he go?
Miku: That's weird. Shouldn't his body be here just now?
Ikuno: Something tells me that he didn't want anyone to find his body.
Later...
Ryunai felt exhausted while walking to his room.
Ryunai: Damn. What a beast.
Ryunai went straight to the bed and slept.
Meanwhile...
Hachi: Now that Orb's missing, looks like you all have to defeat the klaxosaur by yourselves.
Ichigo: How's the status on the klaxosaur now?
Nana: Its in space. But still burning. It could return here in 9 hours.
Ichigo: Then, let's make a plan.
Hachi: Wait, where's Ryunai?
Nana: I don't really know.
Hiro: I'll look for him.
Nana: Alright, then go.
Hiro leaves the room.
Ichigo: What's the plan?
Back in Ryunai's room...
Hiro: Ryunai! Can you open the door?
Ryunai then wakes up.
Ryunai: Just a second!
Ryunai opens the door to let Hiro in.
Hiro: Hey, Ryunai. What's wrong?
Ryunai: Nothing, just tired.
Hiro: Tired? That's weird. Did you sleep?
Ryunai: Yeah, but not enough.
Hiro: Nana and Hachi wants to see you.
Ryunai: Yeah, I be ready just a mo-
Then, Ryunai collapses on the floor.
Hiro: Ryunai! Are you okay?
Ryunai didn't respond.
Hiro: Ryunai. Ryunai!
1 hour later...
Ryunai opens his eyes just to see himself on a hospital bed.
Ryunai: Where am I?
Hiro: You're in the hospital.
Nana: Oh my, Ryunai I'm glad you're okay.
Hachi: The doctor said you're only tired.
Ryunai: Yeah, I was.
Hachi: You should take a rest. I'll handle it from here.
Ryunai: Alright.
They all left the room.
Later in the professor's lab...
Dr. Franxx: Alright, everyone. Listen up, there's a way of beating the klaxosaur. We all know the magma-energy didn't work because of the flaming sphere the klaxosaur used. In order to break the flaming sphere, you need to shoot something hot as that sphere.
Zorome: Wait, that means...
Goro: We have to fight fire with fire?
Ichigo: Of course. New fire burns out the old fire.
Dr. Franxx: Correct. I've designed a weapon that could shoot out fireballs about 4,000 degree celsius.
Futoshi: That's great!
Ikuno: Let's do it, then.
Then, Klaxo-Pandon returns again.
Zorome: Look at the screen!
Dr. Franxx: It has returned. Hurry, I've sent the weapon to the docking bay. You all must hurry!
Nana: Squad 13, move out!
Squad 13: Roger!
All of the FranXX units were setting up for next incoming battle.
FranXX Worker: All FranXX units are now ready to go.
Nana: Good. Synchronization on Delphinium, check. Strelizia, check. Argentea, check. Chlorophytum, check. Genista, check. All FranXX units are now authorized to move out.
Then, all of the FranXX left.
Later in Ryunai's hospital room...
Ryunai: So, how are they're gonna beat the klaxosaur?
Nana: Dr. Franxx made a fireball cannon to destroy the flaming sphere. Basically, fight fire with fire.
Ryunai: Fight fire with fire... that's it!
Meanwhile...
Hachi: Remember, stay focus on the battle. Keep your eyes sharp.
Squad 13: Understood!
As the beast is shooting fireballs at them, Delphinium decides to distract the klaxosaur with Strelizia while Argentea and the rest are gonna set up the cannon. Minutes later, the cannon was ready.
Zorome: Guys! The cannon's ready!
Ichigo: Alright! Strelizia, now!
Zero Two: Okay!
The cannon was then fired after Delphinium and Strelizia got out of the way. However, it wasn't strong enough. So, they attempt to fire it again. But, the beast destroyed the cannon with its fireballs.
Goro: The cannon's destroyed!
Futoshi: This is definitely not go as planned!
Ryunai's hospital room...
Ryunai: I gotta go.
Nana: Wait, where are you going? You're not well yet.
Ryunai: I'm well enough already.
Nana: No, just stay here. You need more rest.
Ryunai: I've got no time already. Look, I promise I'll come back in 2 minutes.
Nana: Promise?
Ryunai: I promise.
Nana: Alright. You can leave.
Ryunai nodded as he leaves. He then gets to the restroom and pulls out the Orb Ring.
Ryunai: Taro-san!
Orb Ring: Ultraman Taro!
Ryunai: Mebius-san!
Orb Ring: Ultraman Mebius!
Ryunai: Help me bring the heat!
Orb Ring: Fusion Up! Ultraman Orb Burnmite!
Orb Burnmite then rises.
Meanwhile at the battlefield, Delphinium and the others had trouble. Then, Orb lands in.
Orb: I'm burning crimson red!
Ichigo: Orb!
Orb uses the Stobium Burst to destroy the flaming sphere which also causes a big shockwave to occur. The beast then lands on the ground. Orb charges at it with a burning punch to the chest. He then use his skill to beat down the klaxosaur. All the FranXX also helps Orb to fight off the beast. Orb then changes his form to Spacium Zeperion and use the Sperion Ray to finish off Klaxo-Pandon.
Hiro: We did it!
Zorome: Alright!
Ichigo: Thanks Orb.
Orb: Your welcome. I'll be leaving.
Futoshi: Bye Orb!
Later...
Ryunai: I'm back.
Nana: You're back.
Ryunai: Yeah, as I promised.
Then, Nana hugs Ryunai.
Ryunai: Nana?
Nana: I'm so glad you came back safe.
Ryunai: Well, of course I do.
Hachi: Ryunai, I-
They stopped hugging.
Hachi: Sorry for interrupting. But, Ryunai. I need you to come for a moment.
Ryunai: Alright. Looks like I gotta go.
Nana: Go on.
Ryunai: Alright.
Ryunai then leaves with Hachi.