My Notes on Mars (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

My Notes on Mars follows Margot, a gifted scientist who vanishes during a hiking trip and returns weeks later at her own memorial service. As her husband Sam treats the impossible reunion as a chance to begin again, the film brings science fiction and romance into an unsettling mystery.

My Notes on Mars is a 2026 science-fiction romance written and directed by Lili Horvát. The film centers on Margot, a young scientist whose unexplained disappearance leaves her husband and friends facing an impossible loss.

When Margot returns weeks later, on the day of her memorial service, her reappearance offers Sam what he sees as an opportunity to repair their troubled marriage. But the woman who comes back is not quite the same as the one who vanished.

My Notes on Mars movie details

Story without spoilers

Margot disappears without explanation while hiking with her husband, Sam, and a group of friends. After several weeks, she suddenly reappears during her own memorial service, turning grief into a baffling reunion.

Although Margot is physically present again, something about her has changed. Sam chooses to view the event as a second chance for their relationship, while the circumstances of Margot’s disappearance and return create the central mystery. The supplied premise keeps the nature of that change unexplained, making the film’s speculative setup an important part of its story.

What to expect

The film combines science-fiction elements with a romantic relationship at its center. Its premise points to a story shaped by disappearance, reunion, altered identity and the strain placed on a marriage when one partner returns changed.

At 1 hour and 46 minutes, My Notes on Mars is presented as a focused feature rather than an extended epic. The setting includes a close group of friends and family members around Margot and Sam, as well as figures connected to therapy, academia and space exploration through the listed character roles. Specific plot developments and the explanation for Margot’s transformation are not supplied.

Cast and creative team

Mackenzie Davis plays Margot, the scientist whose disappearance and return drive the story, while Rupert Friend plays her husband, Sam. The supporting cast includes Atanáz Babinchak as Alex, Ed Cantu as Sam’s Father, Elizabeth Lande as Sam’s Mother, Szabolcs Thuróczy as István, Mari Kiss as Therapist, Adriana Altaras as Professor Greenbaum, Ernest Hausmann as Captain Olmstead and Lara Dragović as Boróka.

Lili Horvát is credited as both director and writer. The film’s production companies are Poste Restante, Paradise City, Amour Fou Vienna, Amour Fou Luxembourg, AmorFortuna and Obala Art Centar.

• Rupert Friend as Sam
• Mackenzie Davis as Margot
• Atanáz Babinchak as Alex
• Ed Cantu as Sam's Father
• Elizabeth Lande as Sam's Mother
• Szabolcs Thuróczy as István
• Mari Kiss as Therapist
• Adriana Altaras as Professor Greenbaum
• Ernest Hausmann as Captain Olmstead
• Lara Dragović as Boróka

Release and production context

My Notes on Mars is listed as a 2026 release, with a release date of September 2, 2026. It has a runtime of 1 hour and 46 minutes and is classified as a science-fiction romance. The production involves Austria, Bosnia and Herzegovina, France, Hungary, Luxembourg and the United States of America. The spoken language is English, and the film is listed as released.

Production companies: Poste Restante, Paradise City, Amour Fou Vienna, Amour Fou Luxembourg, AmorFortuna, Obala Art Centar

Movies Dock view

Built around an unexplained disappearance and an emotionally complicated return, My Notes on Mars places a speculative premise inside a troubled marriage. Its strongest identifying details are the contrast between Margot’s impossible homecoming and Sam’s hope that their relationship can begin again, while the supplied information leaves the larger mystery open.

Film data:
TMDB · IMDb