Jimmy Zip is an abused runaway with pyromaniac tendencies. He heads for the big city where he gets a job working for a drug dealer/pimp named Rick. One night, succumbing to peer pressure from fellow street punks, Jimmy goes on a fireworks rampage. He almost blows up Horace, a brilliant sculptor. The two bond, and Horace becomes Jimmy's mentor, who manages to channel his destructive energies for the first time in his life. Jimmy owes his boss Rick a lot of money for a delivery and soon enough he's tracked down. With the help of a streetwise prostitute, also abused by Rick, the motley duo must find a way to sell their art before they get killed.