Amanda leidt samen met haar dochter een rustig leven op een Amerikaanse boerderij. Maar als de overblijfselen van haar vervreemde moeder arriveren vanuit Korea, wordt Amanda achtervolgd door de angst om in haar eigen moeder te veranderen.
Nee, helaas is Umma nog niet beschikbaar op Netflix in Nederland.
| Production | André Øvredal | Executive Producer |
| Production | Cheng Yang | Executive Producer |
| Production | Yedong Mu | Executive Producer |
| Production | Zhou Tao | Executive Producer |
| Sound | Roque Baños | Original Music Composer |
| Camera | Matt Flannery | Director of Photography |
| Editing | Louis F. Cioffi | Editor |
| Editing | Kevin Greutert | Editor |
| Production | Nancy Nayor | Casting |
| Art | Lee Yong-ok | Production Design |
| Art | W. Haley Ho | Art Direction |
| Art | Ksenia Markova | Art Direction |
| Costume & Make-Up | Leah Butler | Costume Design |
| Costume & Make-Up | Maggie Fung | Makeup Department Head |
| Costume & Make-Up | Jose Zamora | Hair Department Head |
| Costume & Make-Up | Zulma Zamora | Key Hair Stylist |
| Art | Demetrios Katsantonis | Set Dresser |
| Art | Kyle Davio | Set Dresser |
| Art | Cliff Collins | Set Dresser |
| Sound | Marti D. Humphrey | Sound Re-Recording Mixer |
| Sound | Rob Marshall | Sound Re-Recording Mixer |
| Visual Effects | Andrew Roberts | Visual Effects Supervisor |
| Visual Effects | Maricel Pagulayan | Visual Effects Producer |
| Visual Effects | Christine McDermott | Visual Effects Producer |
| Costume & Make-Up | Erica D. Schwartz | Costume Supervisor |
| Costume & Make-Up | Casey Nguyen | Set Costumer |
| 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 | Sam Raimi | Producer |
| Production | Sandra Oh | Executive Producer |
| Directing | Iris K. Shim | Director |
| Production | Zainab Azizi | Producer |
| Production | Marcei A. Brown | Executive Producer |
| Production | Peter Luo | Executive Producer |
| Production | Jeanette Volturno | Executive Producer |
| Production | Matt Black | Executive Producer |
