Princess Peach has invited The Celestian Alliance, Mario, and Yoshi over to her castle to have cake while watching the stars and hoping to find a shooting star. Pinkie and Tucker were imagining what type of cake would they have. They imagined angel, cheese, sponge, chocolate, vanilla, lemon, almond vanilla, pumpkin, carrot, apple, or ice cream cake.

Tucker shouted, "Laughter" and it started raining cake.

"Watch where you're using your element Tucker!" Iago shouted.

"This looks yummy!" Luca exclaimed.

"No Luca," Stella sternly said as she grabbed Luca, "You'll spoil your appetite."

Luca groaned and sat on Betty Ann's shoulder.

As they got to the galaxy, they saw a 40ft Bowser. He was holding Peach hostage again. The Celestian Alliance turned into their armor mode and tried to fight him off, but he was too powerful.

There he sent them to another galaxy where Yoshi's thrive. Yoshi was worshiped by everyone and there the chief gave them a ruby in there honoring.

Afterward, they found a ship that is shaped like Mario. A purple Lubba came in. "I'm, "Lubba". Welcome to Starship Mario!"

Inside the ship, they met The Crystal Gems, "Pearl, Amethyst, and Garnet!" Gary shouted.

"What are you 3 doing here?" Lilo asked.

"They're good friends of mine," Lubba explained.

"Yes." Pearl explained, "Plus we found this blue experiment in our world."

A blue experiment came in with swirling eyes. Lilo recognized him as Experiment 383 a. k. a Swirly. Then Steven came in, Lilo recognized him from the Tour De Alto Mare and from their camping trip with Prof. Atkins.

"So, How did Bowser becomes so big?" Betty Ann asked.

"He has used The Crystal Star," Garney explained, "A magical star that holds powers, it has 6 gems, "Ruby, Topaz, Peridot, Sapphire, Diamond and Aquamarine, yesterday he broke into The Crystal Empire and stole it. The Empire is fine, though."

Amethyst also explained that Bowser had separated the star in 6 galaxies, Bowser used them to become huge and spread them so no one would stop him from controlling the galaxy., "We did get the ruby." Lilo said.

"Let's find another jewel," Sam said.

Pearl tracked down another jewel in the Sweet Mystery Galaxy. Pinkie and Tucker were fascinated by the name and they both decided to go there. Kiki and Applejack decided to go with him so they won't hog up all the food and scare away living gingerbread men.

Pleakley and Jumba decided to come with them too.

There they took off for a ship and headed straight for Sweet Mystery Galaxy.