The documentary centers on Gruff Rhys's quest to meet up with his lost long Patagonian uncle, musician René Griffiths.
| Actor | Role |
|---|---|
 Gruff RhysSelf | Self |
| SSion GlynSelf | Self |
| KKerrdd DantSelf | Self |
| TTony Da GatorraSelf | Self |
| KKing CreosoteSelf | Self |
| LLisa Jên BrownSelf | Self |
| OOsian HughesSelf | Self |
| AAlejandro JonesSelf | Self |
| LLeonardo JonesSelf | Self |
| RRene GriffithsSelf | Self |