In Z's world, he, Scythe, O and a giant Adonis fight off the rest of the Shocker army where Adonis easily slaps the ships and the tanks down. Shane and Laina transform and help out the legendary Riders with the army.
"Time for some reinforcements!''
"Kamen Riders, Omicron Troopers!"
"You know what to do guys!"
"Yes sir!"
The Omicron Troopers aid the Riders by charging towards the troopers, but suddenly the troopers jump up and start exploding when they hit the ground causing some of the Omicron Troopers to fall down. However, Dead End and Tiara help the Troopers with their own attacks and destroy the rest of the Shocker army.
"Let's do it Tiara!"
"Right!"
"Final Attack Rider, Dead End!"
"Wake up!"
The final attacks destroy them and the rest of the Riders easily finish the others off. Meanwhile, back in Kuuga's world they have successfully defeated Nyongo's army and the Commandroids until Decode shows up with his own army.
"Looks like we have company."
"I know. Looks like this is trouble."
"Well Jake it's time for your reckoning."
"Marvelous, leave him to me. I need to save him. I can't let these worlds down. He's my friend. I was with him through thick and thin."
"Jake, we're working together. I know you hate it but sometimes even the best pirate in the universe needs help. I'm helping you."
"Okay, but we can't kill him."
"I know bud. Hey One and Two leave 'em to us."
"Alright. Decode, we cannot let you win! We will do anything to save you from your fate!"
"Too bad old man. You'll die either way."
Marvelous and Kuuga charge towards Decode while One, Two, and the pirates take on Decode's army. The fight between the three is intense which leads to multiple changes in scenery.
"Time to speed things up!"
"Kamen Rider, Kabuto!"
"Sorry but I'll catch up no problem. Ready Kuuga?"
"Yeah, transform!"
"It's morphin' time!"
Marvelous becomes the Red Ninja Ranger and Kuuga transforms into his Pegasus form. Decode pulls out another card to prepare for another attack.
"Attack Rider, Clock up!"
Marvelous and Decode speed up and attack each other through quick attacks while Kuuga uses his senses to find Decode. He finds a good shot and takes it, causing Decode to fall down and revert to his Decode form.
"Nice man. Good shot."
"Thanks, but he's not done!"
"Let's see you counter this!"
"Kamen Rider Blade!"
"Time to take to the skies!"
"Guardian Angel Power!"
Marvelous and Decode use several of their cards to attack each other until Kuuga transforms into his Titan form and tackles him to the ground. Decode kicks him off and pulls out another card.
"Kamen Rider, Dragon Knight!"
"Oh no you don't!"
"Magical source, Mystic Force!"
"Time to end this!"
"Attack Rider, Strike Vent!"
Both use fire attacks against each other and the attacks cancel out, causing both to hit the ground. Before Kuuga can charge towards him, Decode vanishes, but not before promising to return.
"I'll be back for your world Jake! You will regret this!"
Marvelous and Jake power down, confused and stare at each other wondering what will come next for them.