Miles and his Cosmic Explorer friends go rafting on an alien planet to earn a rare holo-badge.
- Justin Felbinger as Miles Callisto
- Fiona Bishop as Loretta Callisto
- Tom Kenny as Leo Callisto
- Olivia Munn as Phoebe Callisto
- Dee Bradley Baker as M.E.R.C.
- Sam Lavagnino as Blodger Blopp
- Issac Ryan Brown as Haruna Kitumba
- Adrian Grenier as Captain Joe
- Grey DeLisle as Stella
- Leo and Joe are revealed to be Cosmic Explorers when they were young.