Mouse (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

Set in the summer before senior year, Mouse follows a teenager whose closest friendship is unexpectedly disrupted. As she tries to regain her balance, she forms a complicated bond with her best friend’s mother, opening questions about identity, family and growing up.

Mouse is a 2026 drama-comedy centered on a teenager facing an unsettled summer before senior year. When her closest friendship changes without warning, she must work out where she belongs and how much her identity depends on the people closest to her.

The film also places that coming-of-age story alongside an unexpected relationship with her best friend’s mother. With an English-language American production and a two-hour runtime, Mouse combines adolescent uncertainty with family and friendship dynamics.

Mouse movie details

Story without spoilers

The story follows a teenager whose summer takes an abrupt turn when her closest friendship is disrupted. The change leaves her struggling to find her footing as she approaches senior year, a period already marked by transition and uncertainty.

Her adjustment becomes more complicated when she develops an unexpected bond with her best friend’s mother. That relationship gives the film its central tension, connecting themes of identity, female friendship, family and the difficult process of becoming more independent. The supplied setting and keywords also place the story in Arkansas and around a 2000s-era world involving theater kids and an upper-class environment.

What to expect

Mouse is positioned as a blend of drama and comedy rather than a straightforward coming-of-age drama. Its premise suggests an intimate story about disrupted friendship, shifting loyalties and the emotional complications that can arise between generations.

The film’s supplied themes include identity, female friendship and a mother-daughter relationship, while the 2000s setting and theater-related context provide additional background. The two-hour runtime allows the central friendship and unexpected bond to remain the main focus without requiring a broader plot summary than the available information supports.

Cast and creative team

Katherine Mallen Kupferer plays Minnie Dunn, the teenager at the center of the story. Sophie Okonedo plays Helen Bell, while Chloe Coleman portrays Callie Bell. The cast also includes David Hyde Pierce as Mr. Murdaugh, Tara Mallen as Barbara Dunn, Iman Vellani as Kat, Beck Nolan as Brad Hugg, Addisyn Grace Cain as Brandi Combs, Audrey Grace Marshall as Cara and Christopher R Ellis as Mark Bell.

Alex Thompson and Kelly O'Sullivan direct Mouse, with O'Sullivan also credited as the writer.

• Sophie Okonedo as Helen Bell
• Katherine Mallen Kupferer as Minnie Dunn
• Chloe Coleman as Callie Bell
• David Hyde Pierce as Mr. Murdaugh
• Tara Mallen as Barbara Dunn
• Iman Vellani as Kat
• Beck Nolan as Brad Hugg
• Addisyn Grace Cain as Brandi Combs
• Audrey Grace Marshall as Cara
• Christopher R Ellis as Mark Bell

Release and production context

Mouse is listed as a 2026 film from the United States of America, with a release date of November 6, 2026. It has a runtime of 2 hours and is in English. The production companies are Little Engine, Rosalind Productions, Metropolitan Entertainment and Runaway Train. The supplied metadata lists the film’s status as Released.

Production companies: Little Engine, Rosalind Productions, Metropolitan Entertainment, Runaway Train

Reported production figures:
Budget $3,000,000

Mouse official trailer

Watch the official trailer on YouTube

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Mouse presents a focused story about a teenager trying to adapt when a defining friendship suddenly changes. Its combination of comedy and drama, along with its Arkansas setting and generational relationship at the center, gives the film a distinct coming-of-age framework without reducing the story to a simple friendship breakup.

Film data:
TMDB · IMDb