Sonic/Splatoon Crossover (Story Mode: Part 3)

(Prologue) Concert Trouble

Sonic, Tails, Amy, Knuckles, and Shadow were just chilling out from their last visit to Inkopolis. That is until they got a message from Callie and Marie.

"Guys, we got a message from the Squid Sisters." Tails called out to everyone.

"What is it?" Knuckles asked.

*Note from Callie and Marie*

Dear Sonic, Amy, Tails, Knuckles, and Shadow.

Our current band is on vacation and our next concert is in about 2 weeks. Think you could help us find a new band in time?

Sincerely, the Squid Sisters

*End of note*

"Sounds like they need help." Amy said.

"But why with a concert band?" Shadow said.

"Well they did say their last band is on break." Sonic replied. "I think we should help them."

"Well, alright." Tails said. "I'll get the portal up and running."

As Tails prepared the transport portal back to Earth to meet back up with the Squid Sisters everyone else got ready to go.

"It's ready guys." Tails said as the portal opened.

"Time to head back to Inkopolis on Earth." Sonic said as he went in.

Amy went in second, Tails third, Knuckles fourth, and Shadow last.

(\\// Inkopolis Plaza: Squid Sisters' Studio \\//)

Sonic, Tails, Amy, Knuckles, and Shadow made it back on Earth in Inkopolis and were Inklings again, except for Shadow since he's an Octoling.

Sonic's clothes are a white t-shirt, blue open button down shirt, black jean shorts, a red headband on his top quill, and his usual gloves and sneakers.

Tails' clothes are an orange lab coat with a white shirt under it, his usual turf war jumpsuit with blue jeans. He wore his usual gloves and sneakers along with a pair of lab goggles.

Amy's clothes remained the same.

Knuckles' clothes are a red shirt with a sideways crescent on the chest with a pair of green jeans. His gloves and shoes remained the same.

Finally, Shadow's clothes are his black Octoling jacket and pants with red streaks and a collar fur white to resemble his chest fur, and a white T-shirt. His gloves and shoes remained the same.

"I'm glad this thing is able to keep the transport between our world and here is functioning." Shadow said.

"Well it's how we always come here." Tails replied.

"We don't have time to chat now. Callie and Marie are waiting for us." Sonic said as went off to find the Squid Sisters.

Everyone else followed Sonic as they met back with the Squid Sisters.

"Hi guys. Good to see you." Callie said.

"You got our letter right?" Marie asked.

"We did." Knuckles replied. "What's with your band?"

"They're on vacation, and they left a note apologizing for forgetting about our concert." Marie replied as she handed Sonic and the others a note from the Chirpy Chips.

"So they weren't kidding." Knuckles said as he put away the note.

"Maybe we could do something to help." Sonic said. "I'm an expert on guitar after all."

"You are?" Callie said in shock.

"He is. Sonic and his siblings Sonia and Manic are known as Sonic Underground, they were the leaders of the Freedom Fighters back in our world." Knuckles explained.