Prologue: A new Adventure Begins

It had been a year since Penn Zero, the legendary Part Time Hero, saved his parents (and the multiverse) from the Most Dangerous World Imaginable. He was now fifteen years old, but he never forgot the adventures he had with his friends: Boone Wiseman, a former Part Time Wiseman and avid flip flop collector; and Sashi Kobayashi, Penn's former Part Time Sidekick and current girlfriend. What better way to celebrate than with a party?

"I can't believe that it's been a year since I saved my parents." Penn told Boone and Sashi, "Triple Fist Bump!"

However, the party would be delayed, mainly because without a multiuniversal transporter, there was no way to travel through the multiverse. But suddenly, two suspicious buildings appeared out of thin air. One looked like a movie theater, and the other looked like a fast food restaurant. Out of both came the former bosses of the Part Time Heroes and Villains: Phyllis and Phil.

"What are you doing here?" Penn asked, surprised.

"Balance of Multiverse is broken." Phyllis explained.

"It's broken." Phil repeated.

Everyone gasped.

"But how?" Penn wondered.

"Most Dangerous World Imaginable got sucked into Subspace." Phyllis explained.

"I guess that this 'Subspace' is now 'The Most Dangerous World Imaginable'." Boone joked.

"No time for jokes." Phyllis told Boone, "Fate of multiverse rests in your hands."

"I thought you said there was no need for part-time heroes anymore." Penn said, as he, Boone, and Sashi walked into the theater.

"Only because there was no threat to balance." Phyllis explained, "The threat in question is one that was supposedly defeated by Mario and a group of Smashers."

"The Subspace Army?" Sashi gasped, "I've heard about them."

"Something very powerful must have brought them back." Penn said, "We have to find out who."

The heroes stepped onto the Multi Universal Transporter.

"Wow, an upgrade!" Sashi grinned, as she looked at her specs.

"I have upgraded your specs and brought back your battle armour." Phyllis explained.

"We might need the upgrades." Penn said.

"Good Luck, and may the Force be with you!" Phyllis called, as the heroes went through the portal.