Bubby is a 35-year-old man who has never set foot outside his mother's dingy apartment in the back of a printing press in an industrial area of Adelaide. In addition to beating and sexually abusing him, she confines him to the apartment, telling him that the air outside is poisonous and telling him he will die if he tries to leave. Bubby eventually escapes, joins up with a rock band, and embarks on a confused but nihilistic journey of self-discovery and shocking mayhem.