Amanda and her daughter live a quiet life on an American farm, but when the remains of her estranged mother arrive from Korea, Amanda becomes haunted by the fear of turning into her own mother.
Unfortunately the movie Umma is not yet available on HBO Max.
| Production | Zhou Tao | Executive Producer |
| Production | Yedong Mu | Executive Producer |
| Production | André Øvredal | Executive Producer |
| Production | Cheng Yang | Executive Producer |
| Art | Lee Yong-ok | Production Design |
| Costume & Make-Up | Leah Butler | Costume Design |
| Art | Kyle Davio | Set Dresser |
| Sound | Rob Marshall | Sound Re-Recording Mixer |
| Production | Nancy Nayor | Casting |
| Costume & Make-Up | Jose Zamora | Hair Department Head |
| Costume & Make-Up | Casey Nguyen | Set Costumer |
| Costume & Make-Up | Erica D. Schwartz | Costume Supervisor |
| Visual Effects | Andrew Roberts | Visual Effects Supervisor |
| Visual Effects | Christine McDermott | Visual Effects Producer |
| Visual Effects | Maricel Pagulayan | Visual Effects Producer |
| Editing | Kevin Greutert | Editor |
| Art | W. Haley Ho | Art Direction |
| Sound | Roque Baños | Original Music Composer |
| Editing | Louis F. Cioffi | Editor |
| Art | Demetrios Katsantonis | Set Dresser |
| Art | Ksenia Markova | Art Direction |
| Sound | Marti D. Humphrey | Sound Re-Recording Mixer |
| Camera | Matt Flannery | Director of Photography |
| Costume & Make-Up | Maggie Fung | Makeup Department Head |
| Art | Cliff Collins | Set Dresser |
| Costume & Make-Up | Zulma Zamora | Key Hair Stylist |
| Crew | Michael Clear | Thanks |
| Writing | Iris K. Shim | Writer |
| Costume & Make-Up | Christopher Allen Nelson | Makeup Effects Designer |
| Crew | Linda Jewell | Stunt Double |
| Sound | Biko Gogaladze | Foley Artist |
| Directing | Phil DeSanti | Second Second Assistant Director |
| Visual Effects | Andrew Degryse | VFX Artist |
| Production | Peter Luo | Executive Producer |
| Production | Marcei A. Brown | Executive Producer |
| Production | Jeanette Volturno | Executive Producer |
| Directing | Iris K. Shim | Director |
| Production | Sandra Oh | Executive Producer |
| Production | Zainab Azizi | Producer |
| Production | Sam Raimi | Producer |
| Production | Matt Black | Executive Producer |
