Lennie is a teen musical prodigy grieving the death of her sister when she finds herself caught between a new guy at school and her sister's devastated boyfriend. Through her vivid imagination and conflicted heart, Lennie navigates first love and first loss.
| Actor | Role |
|---|---|
 Grace KaufmanLennie | Lennie |
 Jacques ColimonJoe Fontaine | Joe Fontaine |
 Cherry JonesFiona | Fiona |
 Jason SegelBig | Big |
 Pico AlexanderToby Shaw | Toby Shaw |
 Ji-young YooSarah | Sarah |
 Havana Rose LiuBailey | Bailey |
 Julia SchlaepferRachel Brazile | Rachel Brazile |
 Tyler LoftonMarcus | Marcus |
 Solomon ShivMr. James | Mr. James |
 Augie IsaacLuke Jacobus | Luke Jacobus |
 Destiny EkwuemePreppy Student (uncredited) | Preppy Student (uncredited) |
| RRae RobisonMaria (uncredited) | Maria (uncredited) |
 Lukas StoiberSkateboard Student (uncredited) | Skateboard Student (uncredited) |
| MMadisyn WoodYoung Lennie (uncredited) | Young Lennie (uncredited) |