A young girl discovers a secret map to the dreamworld of Slumberland, and with the help of an eccentric outlaw, she traverses dreams and flees nightmares, with the hope that she will be able to see her late father again.
Unfortunately the movie Slumberland is not yet available on HBO Max.
| Writing | Winsor McCay | Characters |
| Production | Ray Angelic | Executive Producer |
| Production | Michael Handelman | Executive Producer |
| Production | Christopher Surgent | Co-Producer |
| Production | David Guion | Executive Producer |
| Production | Cameron MacConomy | Co-Producer |
| Editing | Mark Yoshikawa | Editor |
| Camera | Jo Willems | Director of Photography |
| Art | Dominic Watkins | Production Design |
| Production | Denise Chamian | Casting Director |
| Production | Francis Lawrence | Producer |
| Costume & Make-Up | Trish Summerville | Costume Design |
| Sound | Pinar Toprak | Original Music Composer |
| Crew | Dana Howes | Transportation Coordinator |
| Crew | Arlene Halpenny-Heeley | Driver |
| Crew | Garvin Cross | Stunt Driver |
| Camera | Alan Markfield | Still Photographer |
| Directing | Francis Lawrence | Director |
| Writing | David Guion | Screenplay |
| Production | David Ready | Producer |
| Production | Peter Chernin | Producer |
| Production | Jenno Topping | Producer |
| Writing | Michael Handelman | Screenplay |
| Visual Effects | Sheen Wei Yap | Visual Effects Supervisor |
| Crew | Scott J. Ateah | Stunt Coordinator |
| Visual Effects | Samantha Thompson | Visual Effects Production Assistant |
| Crew | Lisa Shamata | Unit Publicist |
