Zu, a free spirit estranged from her family, who suddenly finds herself the sole guardian of her half-sister, Music a teenager on the autism spectrum whose whole world order had been beautifully crafted by her late grandmother. The film soon challenges whether it is Zu or Music who has a better view of the world, and that love, trust, and being able to be there for each other is everything.
Zu is newly sober when she receives news that she is to become the sole guardian of her half-sister named Music, a young girl on the autism spectrum. The film explores two of Sia's favorite themes: finding your voice and creating family.