In the fall of 2012, Zach Sobiech, a high school student who is battling osteosarcoma, takes the stage at his school's talent show to perform an acoustic version of Sexy and I Know It for a bemused crowd. His best friend, Sammy Brown [Summer H. Howell] conspires with him to write music, starting with a song they nickname Blueberries as a way to channel Zach’s hopes and fears into something that might outlive him. Despite the illness, Zach manages to work up the courage to ask out fellow student Amy Adamle [Sabrina Carpenter] for a picnicking date, but a sudden coughing fit lands him in the hospital with a collapsed lung. The doctors deliver the harsh news: the treatments have stopped working, and his cancer is terminal, giving him six to ten months to live. As he absorbs this prognosis, Zach confides in his best friends, sharing the diagnosis with Sammy and Amy, while his teacher Milton Weaver [Tom Everett Scott] becomes a steady source of encouragement about what he can still do with the time he has left.
Winter 2012 brings a family trip to Lourdes, France, in Laura Sobiech’s desperate bid for a miracle. When they return, Zach reconnects with Sammy and Amy, and a moment at a Jason Mraz concert [Jason Mraz] gives him a fresh sense of purpose. Amy agrees to go to the prom with him after a small, hopeful moment in the audience, and Zach finds himself propelled toward music and connection once more. Back home, a late-night surge of energy prompts Zach and Sammy to form a band, and their budding friendship deepens into something more complex as they wrestle with the possibility of a real relationship while also chasing a larger dream. They post their songs online, and their music starts to attract attention, especially after Fix Me Up catches the eyes of listeners who feel the honesty in Zach’s story. Zach is buoyed by support from his family and Mr. Weaver, who sees potential in their work even as the reality of his condition remains ever-present.
Rob Sobiech [LilRel Howery], Zach’s father, senses the limitations of a medical prognosis but wants to make his son's remaining time meaningful. He purchases a Nissan GT-R to surprise Zach and, in a moment of vulnerability, the two share a quiet confrontation about what Zach really wants from life and from those who love him. Laura and Rob have a candid conversation in which he admits that every gesture is meant to bring Zach happiness, even when he cannot change what lies ahead.
Spring 2013 marks a turning point as Weaver reveals that BMI is interested in their music. The band, now calling itself A Firm Handshake (also known as “Ames” in their circles), heads to New York City to sign their first contract. On the flight home, Zach experiences a surge of creative energy and writes the song that will become a defining moment of his legacy: Clouds. The couple—Zach and Amy—reconnect as he finds new reasons to live and to sing, even as his body weakens. He makes time to apologize to Amy for past behavior, and they mend their relationship, choosing to move forward with clarity about what remains possible.
Back home, Zach opens up about how to handle his remains and his funeral, asking for the sound of bagpipes to accompany his memory. Sammy and the Sobiechs learn that the prom might be in jeopardy as Zach’s condition worsens, but they decide to blend the prom with a larger concert at the Metro Theatre, a graduation celebration, and a fundraiser for osteosarcoma research. The day arrives with Zach’s health declining, yet he insists on performing. Sammy opens the show with How to Go to Confession before Zach takes the stage to perform Clouds, fighting for each breath as the crowd helps carry him through the song. When the entire audience joins in, his voice is carried on their shared love and solidarity.
Zach Sobiech passes away on May 20, 2013, leaving behind a powerful college essay about his beliefs on life and death. In the wake of his passing, friends and family gather for a group photo in his memory, and the end credits flash with real-life photos of Zach and Sammy, underscoring the lasting impact of his music and his message. A final image evokes a cloud in the sky shaped like a “Z,” a fitting symbol for a life that was brief but bright, and for a song that promised to keep his spirit alive.
