Determined to fulfill his life’s mission, 26-year-old John Allen Chau embarks on a dangerous adventure across the globe to convert the uncontacted tribe of North Sentinel Island to Christianity, while a detective from the Andaman Islands races to stop him before he does harm to himself or the tribe.
| Actor | Role |
|---|---|
 Sky YangJohn Allen Chau | John Allen Chau |
 Radhika ApteMeera Ganali | Meera Ganali |
 Naveen AndrewsSonny | Sonny |
 Ken LeungPatrick | Patrick |
 Toby WallaceChandler | Chandler |
 Ciara BravoKayla | Kayla |
 Marny KennedyMelanie | Melanie |
 Claire PriceLynda | Lynda |
| OOlamide Candide JohnsonAvril | Avril |
| DDieudonné NgaboRaz | Raz |
 Samson CoulterCaleb | Caleb |
| AAsher Teja YasbincekHonore | Honore |
| AAsh BarbaNot listed | Not listed |
 Ali FardiAnoosh | Anoosh |
 Apindereep SinghSikh Immigration Officer | Sikh Immigration Officer |
 Ellis EyresKyle | Kyle |
 Aldous Ciokajlo SquireDylan | Dylan |
 Archie FisherReed | Reed |
| ZZachary WillisZach | Zach |
 Mav KangWestern European Christian | Western European Christian |
| MMridul DasIshan | Ishan |
| RRam Gopal MorwalUnderling | Underling |
| SSaurabh AgarwalHotel Manager | Hotel Manager |
| EErik AlensMax | Max |
| SSummer KnoxAmerican University Student (uncredited) | American University Student (uncredited) |
 Alice Eloise LingChild Extra (uncredited) | Child Extra (uncredited) |