A/N: Unlike my last attempt at DBZ fanfiction, I hope to finish this one.

Prologue

"Phew", the blue-green haired Capsule Corp. heiress known as Bulma Briefs said, wiping her brow on her shirt, "I think that I'll wait until tomorrow to test this."

She was working on a portal so that she could see what alternate dimensions were like. Since the world was at peace after the defeat of Majin Buu, she had time to focus on things other than hiding from the latest threat to Earth or fixing the Gravity Room so that her husband, the Saiyan Prince Vegeta, could train. She could never see the point, other than getting ready in case someone else should threaten the Earth. He told her that it was so that he could be stronger than Goku, or as he called him, Kakarot.

Ha, like that's ever gonna happen, She thought as she left to go take a shower after spending all morning in her lab. She got out of the shower feeling refreshed and went to check on Goten and Trunks. Goten had come to spend the weekend with Trunks, as he often would. Right now the boys were in Trunks' room playing a video game. She then headed downstairs to help her mother with lunch for her and the three boys. Preparing lunch was always a two-woman task, as Saiyans have huge appetites. Not only did they have to feed a full-blood Saiyan, but they had to feed Goten and Trunks, the two demi-Saiyans.

"Time to eat!", she called the boys. The boys rushed down the stairs as Vegeta came in from the Gravity Room.

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Meanwhile in the sewers of New York, Donatello, a turtle in a purple mask, was working on one of his inventions. When he wasn't working on stuff for his sensei, Splinter, or the other turtles, Donnie often worked on his own inventions. He turned a subway car into the Shellraiser and a VW Bus into the TurtleVan.

"Yo, D, whatcha workin' on?", Michelangelo, the turtle in the orange mask asked his big brother. Mikey, as his brothers called him, was always hanging around Donnie's lab watching him work. While he often messed up Donnie's experiments, he used his brain to get the turtles out of scrapes more than a few times.

"I'm building an interdimensional portal. I wanted to build one ever since I saw what the Kraang had," Donnie told his brother. He, too, was curious about dimensions other than Dimension X. Although he had been working on his portal longer, he was further behind than Bulma was on hers, due to a lack of technology.

"Sweet, so now we can go wherever we want."

"I highly doubt that the portal will allow that, as I don't really have the tech to control where it lands us."

"How about getting us back?"

"Don't worry, I fully intend to build a remote control to return us home from whatever dimension we wind up in."

"Can't wait! Imma have so much fun with this thing!"

"You aren't just going to wait until I finish and then take off on an interdimensional road trip, because I will be the only one with the key that activates the portal."

A/N: I figured since the '87 version of Donatello had a portal, this one should have one, too.