Solène is a 39-year-old single mother and accomplished owner of the Marchand Raphel art gallery in Los Angeles. Proud of her French heritage, she possesses a refined, polished demeanor that often makes her feel slightly separate from other mothers. She dedicates herself to her gallery, championing women artists and artists of color, while carefully balancing her independent identity with her responsibilities as a parent.

Hayes is the 20-year-old lead singer, songwriter, and founder of the massively popular British boy band August Moon. Descended from a wealthy British family, he rejects his parents' lofty expectations to pursue music. Despite the lack of privacy that accompanies his global fame, he longs to be taken seriously as a musical artist and quickly acts on his attraction to Solène's maturity and passion for art.

Isabelle is the 12-year-old daughter of Solène and Daniel. Like many girls her age, she is a devoted fan of August Moon and harbors a deep celebrity crush on Hayes Campbell. She is currently dealing with the awkward transition from childhood to adolescence, adjusting to shifting family dynamics following her parents' divorce and her father's new relationship.

Oliver is Hayes's childhood best friend and fellow bandmate in August Moon. Known as the most elegant member of the group, he is surrounded by rumors regarding his personal life. He harbors hidden resentments and utilizes inappropriate behavior to exert control over others, creating friction within the band's inner circle.

Daniel is a successful entertainment lawyer and Solène's ex-husband. He frequently prioritizes his career and personal life over his parenting commitments, leaving Solène to manage unexpected childcare duties. His tendency to monitor and judge Solène's choices creates friction as they attempt to co-parent Isabelle.

Lulit is Solène's business partner and co-owner of the Marchand Raphel Gallery. As Solène's closest confidante, she provides pragmatic advice and steady support, acting as a grounding presence in Solène's life. She actively encourages Solène to embrace new experiences and prioritize her personal happiness.

Penelope is Oliver's older sister and a figure from Hayes's early teenage years. Her past connection to Hayes remains a point of contention within the band's social dynamic.

Charlotte is Oliver's girlfriend who frequently accompanies the band on their travels. She is talkative and shares insider information about the band's origins and the members' habits.

Eva is Daniel's younger girlfriend, whose presence represents a significant shift in Isabelle's family structure. Her relationship with Daniel highlights the different societal standards applied to aging men versus women.

Amara is a friend of Solène's from the art world. She engages in candid discussions about the societal pressures placed on women regarding aging and desirability.

Filipa is one of Hayes's former romantic partners whose sudden appearance triggers insecurities for Solène regarding Hayes's dating history.