The students take a trip on the school yacht, and end up stranded on a deserted island. When the teaches go native, It's up to Milo to lead the class to fix the boat and get back to civilization.
- "Weird Al" Yankovic as Milo Murphy
- Sabrina Carpenter as Melissa Chase
- Mekai Curtis as Zack Underwood
- Dee Bradley Baker as Diogee
- Mackenzie Phillips as Principal Milder
- Sarah Chalke as Mrs. Murawski
- Vincent Martella as Bradley Nicholson
- Michael Hirano Culross as Dr. Drako
- Gregory Michael Cipes as Mort
- Laraine Newman as Mrs. White
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