A high school musical is rarely just about hitting the right notes. Behind the curtain, there are friendships, family tensions, teenage ambitions, and enough emotional chaos to rival the drama on stage. Netflix's Don't Say Good Luck brings all of these elements together for a coming-of-age story where the spotlight shines brightly, but life outside the theater refuses to stay backstage.

With a theater-loving teenager at its center and a seasoned ensemble surrounding her, the musical comedy-drama blends youthful energy with a deeply personal family story. So, who is stepping into the spotlight, and who is caught up in all the drama behind it? Here is a closer look at the cast of Don't Say Good Luck.

Sunny Sandler as Sophie Birenbaum: Sunny Sandler takes center stage as Sophie Birenbaum, the theater kid at the heart of Don't Say Good Luck. Sophie lands the lead role in her high school's production of Waitress, giving her a chance to embrace her biggest passion. However, her excitement over the opportunity is complicated by a major family crisis. Director Julia Hart has praised Sandler's singing, emotional range, and ability to handle both the musical sequences and the film's heavier dramatic moments.

Melanie Lynskey as Elizabeth Birenbaum: Melanie Lynskey plays Elizabeth Birenbaum, Sophie's mother, whose cancer returning dramatically changes the family's circumstances. Her health crisis becomes a major part of Sophie's emotional journey, adding a layer of heartbreak to what should have been an exciting time in the teenager's life.

Max Greenfield as Ted: Max Greenfield portrays Ted, Sophie's father. As the family faces an uncertain and emotionally difficult period, Ted provides a grounded presence while navigating the challenges alongside his daughter and wife.

Stephanie Beatriz as Ms. Parker: Stephanie Beatriz joins the cast as Ms. Parker, a key figure within Sophie's school and theater world. Her character is closely connected to the high school production, placing her among the adults helping bring the students' musical ambitions to life.

Bebe Neuwirth as Linda: Bebe Neuwirth plays Linda, Sophie's grandmother. With Neuwirth's extensive background in both television and musical theater, her presence adds another layer of performance experience to the film's family ensemble.

Steve Buscemi as Dale: Steve Buscemi takes on the role of Dale, Sophie's grandfather. The part also marks a notable change of pace for Buscemi, as the actor has described it as his first time playing a grandfather.

Jack Champion as Jack: Jack Champion stars as Jack, one of the younger characters within Sophie's school and social circle. His character forms part of the teenage ensemble surrounding Sophie as she navigates the highs and lows of high school.

Scarlett Estevez as Carolyn Morales: Scarlett Estevez plays Carolyn Morales, another young member of Sophie's high school world. Her character adds to the friendships and teenage dynamics that unfold alongside the musical production.

Emma McNulty as Erin: Emma McNulty appears as Erin, joining the group of students who populate Sophie's high school and theater circle.

Elyse Bell as Mallory Sinclair: Elyse Bell portrays Mallory Sinclair, another member of the younger ensemble. Along with the other students, Mallory contributes to the high school atmosphere surrounding Sophie's journey.

Jon Lovitz as Lenny: Jon Lovitz takes on the supporting role of Lenny, bringing some of his trademark comedic energy to the ensemble. While details surrounding the character remain limited, Lenny adds another dose of humor to the film's mix of comedy and family drama.

Supporting cast includes: Ethan Costanilla as TJ, Ade Chike Torbert as Frank, Dylan Pitanza as Alan Fishman, as well as additional family members, younger Birenbaum siblings, and high school ensemble performers.

Who Stars in Netflix’s 'This Summer Will Be Different'? Full Cast and Character Guide

Together, the cast brings a mix of established performers and younger actors to the story, with musical theater, family relationships, and teenage friendships all sharing the same stage. But before the curtain rises, there is a much bigger story unfolding behind Sophie's big break.

At the center of Don't Say Good Luck is Sophie Birenbaum, a passionate theater kid who gets the opportunity she is been waiting for when she is cast as the lead in her school's production of Waitress. For Sophie, the role should be a dream come true, giving her the chance to perform in front of her classmates and embrace the world she loves most.

However, the excitement surrounding the production is soon overshadowed when Sophie's mother, Elizabeth, experiences a return of cancer. Sophie is suddenly forced to juggle rehearsals, friendships, school, and the pressures of performing while confronting the painful reality of her family's situation. The result is a story where the biggest drama is not necessarily happening under the theater lights.

The film uses Sophie's experience to explore growing up, family, loss, resilience, and learning to appreciate the present. Its musical sequences provide moments of energy and escapism, while the story outside the stage gives Sophie a much more difficult role to play: figuring out how to keep living fully when life doesn't follow the script.

With a theater kid in the spotlight, a talented ensemble waiting in the wings, and plenty of family and high school drama unfolding behind the scenes, Don't Say Good Luck brings together musical theater and coming-of-age storytelling in an emotional package. Sunny Sandler leads the cast as Sophie, surrounded by performers who add humor, warmth, and dramatic weight to her journey. The film's combination of music, teenage ambition, family upheaval, and heartfelt storytelling makes its cast particularly intriguing. After all, sometimes the most important performance isn't the one happening on stage.

'My Brilliant Career' on Netflix: Release Date, Cast, Plot, Trailer & Everything to Know

Which Don't Say Good Luck star are you most excited to see? Let us know in the comments!