Both teams enter the throne room and see Slade sitting on it. "Welcome Teen Titans." He says, "And welcome Kids Next Door." "Slade!" Says Robin. "You've really outdone yourself this time!" "You're so right." Says Slade. "Now I am succeeding my goal of claiming the whole world for myself thanks to my new accomplice." He then glows red. "And I have intended to wipe you stupid teenagers out with his help." Says Father stepping out of the shadows. "So now we're going to discipline you naughty kids and pathetic teens." "Oh yeah!" Yells Numbuh 4. "Bring it on!" He takes out his G.U.M.Z.O.O.K.A. and points it at Father. "As you wish." He says. "And he hurls a ball of fire at both teams. They both jump out of the way.

"Kids Next Door! Battlestations!" Shouts Numbuh 1. "Titans! Go!" Shouts Robin. Both teams start charging at the two villains. The Titans use their signature attacks while Sector V use their weapons. Slade laughs. "You're powers are strong. But check out my new superpowers!" He shoots red laser at Starfire, knocking her to the ground. He then fires a blast at Numbuh 5. But Raven intervenes and blocks the blast with her powers.

Numbuh 4 runs towards Father and delivers a flying kick, knocking him to the ground. "Not so tough now are you!" He says. "Are you?" Asks Father and throws a fireball at him. He is being thrown to the ground. "Maybe you could cool off!" Says Robin and he throws an ice disc at him. It hits and freezes him in ice. "He looks so ice with that!" Says Numbuh 2. Robin cringes at that joke. "One more joke like that and I'm going to…" says Numbuh 5. But before she can finish, Father glows fiery red and breaks out of the ice. "That was cold!" He shouts with flames burning high. "Let's heat this up shall we!" He unleashes a blast of fire. Everyone jumps out of the way, but Numbuh 3 gets hit and was sent flying. Numbuh 4 tries to catch her, but misses. "Numbuh 3!" He cries as he watches her fall from the ledge.

Robin jumps after her. He uses his grapple gun and swings towards her. He catches her and then swings back to the ledge. They land on the ground with Robin holding Numbuh 3 in his arms. "You ok?" He asks. "I'm all good." She says. "Thanks for the save." "Alright thanks for saving her." Says Numbuh 4. "Now can we please get back to business?" Robin puts Numbuh 3 down and they continue to fight Father and Slade.

Starfire throws starbolts at Slade. But he blocks them with his new powers. He then fires a blast at her. This time she dodges it. Numbuh 1 blasts him with his laser blaster. Numbuh 2 joins in with his laser blaster. Numbuh 5 flies with her jet pack and fires blasts from her B.O.T.T.L.E.C.A.P. Slade blasts Numbuh 5 with his powers. Then he knocks out Numbuh 1 and Numbuh 2.

"Azarath Metrion Zinthos!" Yells Raven and she uses her telekinesis to grab some crates and launches them at Father. He destroys them via fire blasts. Then he hurls a fireball at her. Beast Boy who has turned into a dinosaur knocks him out with his tail. Then he charges at him. But Father discharges flame, knocking him out and back to his normal form. Cyborg charges at Father and punches him several times before shooting him with his sonic cannon. "You teenagers are weak just like those brats!" Cries Father. "He then knocks out Cyborg with a flame blast."

Slade is facing off against Robin and Numbuh 1. Robin uses his combat stick and fights him while Numbuh 1 uses his S.P.L.A.N.K.E.R. "You think you can still defeat me?" He asks. "Well now I am totally invincible and no one will stop me to ruling the world!" "Oh yeah!" Shouts Numbuh 1. "Well we have a surprise for you!" He takes out a device and presses the button. The new weapon starts to unfold, revealing a cannon. Then like any other new 2x4 technology, it goes through an introduction: "Kids Next Door M.E.G.A.S.H.O.T. Multi Enhanced Gadgets Artillery So Hyper On Takedowns."

"Who's invincible now?!" Says Numbuh 1. He then uses M.E.G.A.S.H.O.T. to fire a lethal blast at Slade. This sends him flying. Father sees this and looks at the new weapon. "What?" He gasps. "Time to cool off!" Shouts Numbuh 1. He then changes the mode from laser to water and starts firing water at him, soaking him and putting out his flames. While he is soak and wet, Beast Boy turns into a bull and charges at him. He knocks him to the ground. Then Starfire hurls a blast of star bolts at him.

After being pummeled many times by Sector V and the Titans, Father unleashes a fiery blast and send them all flying. "THAT'S IT!" He shouts. "I'm going to give you the most BRUTAL AND VIOLENT PUNISHMENT YOU'LL EVER RECEIVE!" "Not gonna happen!" Shouts Numbuh 4. He then fires explosive gumballs at him, getting him all sticky and stuck. Numbuh 1 then switches M.E.G.A.S.H.O.T. from water to ice. It starts to fire a blast of ice at Father. He tries to fight it, but the ice soon overwhelms his flames and he is soon sealed up in a huge block of ice.

"Nice work Numbuh 1." Says Numbuh 3. Numbuh 2 looks at the frozen Father and says, "Well now you look pretty. Pretty enough to our ice sculpture on our dinner table tonight." Numbuh 5 hits him with her hat. "Ow!" He says. "What did you do that for?" "For saying the lamest joke Numbuh 5 has ever heard!" "Oh yeah!" Shouts a voice. "I'll give you something ever more lame!" It's Slade who has recovered from the blast. "No one's gonna stop me from taking control of the world!" He shoots laser blasts at both teams. Both of which dodge the blasts.

Numbuh 4 flies with his jet pack at Slade and fires a barrage of laser blasts from his laser blaster. "Take that you cruddy bad guy!" He yells. "I think it's time to close the show." Says Raven as she uses her telekinesis to grabs some curtains. She then wraps it around Slade. Shortly after Slade uses his powers and breaks free of it. He starts shooting laser blasts. Numbuh 5 dodges them with every flip. Beast Boy turns into a tiger and lunges at Slade. After attacking him, Slade knocks him off with a blast.

Cyborg then fires his sonic cannon. But Slade shields himself from them with a forcefield generated by his powers. After releasing the shield, Robin performs a flying kick and knocks Slade to the ground. Numbuh 1 aims the M.E.G.A.S.H.O.T. at Slade. He quickly recovers and sees the cannon pointing at him again. He dodges the blast. Then he fires a blast of laser at Numbuh 1.

But Numbuh 1 fires the cannon again, holding off Slade's laser from hitting him. Both lasers are struggling against each other. "Give it up boy." Says Slade. "You're just a kid. You're weak!" Numbuh 1 is struggling. "Wrong!" He yells. "I may be a kid, but I'm not what you think!" He strengthens the laser, causing it to push forward against Slade's. "I'm smart! I'm capable!" Numbuh 1 shouts. "And most of all. I am very STRONG!" And with that, the M.E.G.A.S.H.O.T. laser pushes against Slade's laser and knocks him out.

Slade lies on the ground defeated. Numbuh 1 approaches him. "Let this be a lesson to you." He says. "Being a kid doesn't mean that we can't handle the big stuff. We are far capable at doing anything and we dare to try them. A kid can be intelligent, can be courageous, and most importantly, they can be just as strong as a teenager. And on top of that, you have just underestimated the Kids Next Door!" "Good job Numbuh 1," says Robin. Then he turns to Slade and takes out his combat stick. "This is what you get for trying to harm a group of kids." And with that, he swings his stick and knocks out Slade with a blow to the head.

With Slade knocked out and defeated, The Teen Titans and Kids Next Door congratulate each other. "Great work everyone." Says Robin, "We have defeated both Father and Slade." "And good job for stopping the teenagers from taking control of the Kids Next Door." Says Numbuh 1. "And thank you Teen Titans, we couldn't have saved the day without you." "You're more than welcome." Says Cyborg. "Uh excuse me." Says Starfire. "Don't you think we should free those children trapped in those fire prisons?" "Yes." Says Numbuh 1. "I'll take care of that."

He switches the mode on M.E.G.A.S.H.O.T. to water and uses it to douse the fiery jail cells, freeing all the operatives in the process. They cheered as they are freed. Numbuh 362 and Numbuh 86 are the last ones to be freed. "Thanks Numbuh 1." Says Numbuh 362. "Don't thank me. Thank our new friends. They are the ones who help make this new weapon for us." "I couldn't thank you enough for helping the Kids Next Door." "It's our pleasure." Says Robin.