When Dave's wheelchair comes to life, it embarks on a murderous rampage through the streets of Sydney, eating any unsuspecting civilian it comes across. When one would-be victim, Eric, survives the encounter, an increasingly absurd chase takes place. Initially an unwilling passenger within the mayhem, Dave grows to accept the carnage and starts to enjoy the power it gives him. So it's up to Eric, and another survivor Katie, to find a solution as the chase becomes ever more bloody and ridiculous.