Ally finally seals a Record deal with Vinyl Records and releases her first album but when Moon Fever breaks out in Miami, her chances of making her album a hit lessens.
- Ross Lynch as Austin Moon
- Laura Marano as Ally Dawson
- Calum Worthy as Dezmond "Dez"
- Raini Rodriguez as Patricia Maria "Trish" De La Rosa
- Spencer Boldman as Aaron Moon
- Stefanie Scott as Lexi Reed
- Jack Griffo as Tyler Fox
- Garrett Backstrom as Zac Helm
- Zoey Deutch as Samantha Bennett
- Austin North as Spencer Dawson
- Emma Stone as Miley Grant
- Rebecca Budig as Sarah Vinyl