Yin & Yang and the other Gokaigers helped their comrades to defeat their enemies until one day they an old fiend they thought they defeated a long time ago.

Basco: We meet again Gokaigers

Don: Basco returned

Luka: Huh?!!

Ahim: What!!

Gai: Oh no

Yin: Who?

Yang: Who is this Jack Sparrow knockoff

Basco: Who are you calling a knockoff ? I'm Basco Ta Jolokia, the greatest space pirate of all time

Yang: No Captain Marvelous is the greatest space pirate

Basco: We'll see about that *prepares for battle*

Yang: Let's go!

Gokaigers: Right! Gokai change

Gokai Morphers: GOKAIGER!!!

The Gokaigers fought back against Captain Marvelous' arch nemesis Basco Ta Jolokia but he was too powerful, luckily Yin & Yan stood their ground, ready to defend their friends with their lives just like their parents, Lincoln & Emiko did when they were born. Basco uses a technique that helped him defeat Yin & Yan.

Basco: Heh pathetic you two aren't such a challenge & you're defeated by the same pirate who killed Marvelous and Joe

Yin: You killed Marvelous & Joe

Basco: Yes & now you two as well, prepared to die

Kamen Rider Black Rx: Rider Kick *kicks Basco in the chest*

Basco: Who dares to kick me in such a way

Kamen Rider Black Rx: I'm the child of the sun, KAMEN RIDER BLACK RX

Basco used the stolen Hoverdude ranger keys to do all of dirty work which is fighting Kamen Rider Black Rx....Obviously. Kamen Rider Black Rx didn't came alone, he brought reinforcements and defeated Basco.

Yang: Thank you Rx

Kamen Rider Black Rx: You're welcome young man and I believe these belong to you and your friends

Yin: Thank you Black Rx