This is a Mario and Sonic story,
Team Sonic is making a vacation trip to Isle Delfino, where Mario took his vacation, and when Team Sonic gets to Isle Delfino, he see's Mario and a hole bunch of goop, and two figures, and one of them looks like Mario and the other one looks like Sonic, so it is up to Team Sonic and Mario to find the mysterious people, and get rid of the goop, and get the Shine Sprites back, before it's too late, and a big plot twist near the end of the story.
- Sonic the Hedgehog/Shine Sonic
- Miles "Tails" Prower
- Knuckles the Echidna
- Mario/Cape Mario