Loud music. Pornography. Lighting fires. These are a few of Hesher's favorite things. And they are what Hesher (Joseph Gordon-Levitt) brings into the lives of TJ (Devin Brochu) and his father Paul (Rainn Wilson) when he takes up residence in their garage uninvited. Grief-stricken by the loss of TJ's mother, Paul can't muster the strength to evict the strange squatter, and soon the long-haired, tattooed Hesher becomes a fixture in the household. Like a force of nature, Hesher's anarchy shakes the family out of their grief and helps them embrace life once more.