15-year-old Tracey Berkowitz (Ellen Page) is in her underwear under a tattered shower curtain at the back of a bus, looking for her little brother Sonny (Zie Souwand), who thinks he's a dog.
Tracey's journey leads into the dark underbelly of the city, into the emotional cesspool of her home, through the brutality of her high school, the clinical cat-and-mouse games with her shrink and her soaring fantasies of Billy Zero (Slim Twig) - her rock and roll saviour. Her travels also put her in contact with the seedier inhabitants of the city, like Lance (Maxwell McCabe-Lokos), her would-be saviour who ultimately puts her life in jeopardy.
Tracey's stories begin to intertwine truth with lies, and hope with despair, as she moves closer to the truth of Sonny's disappearance.
What is the name of Tracey's little brother?
Sonny