Four young friends, while taking a shortcut en route to a local boxing match, witness a brutal murder which leaves them running for their lives.

When his mother sends Jack off with money to buy groceries, he comes home with a magic supercharged dirt bike instead. His mother is furious, but when Jack uses the magic bike to save the local hot dog stand from the clutches of corrupt big business, he becomes the town hero.

Happily married Michael and Karen Carr call the police after Karen is held at knife point during a failed robbery attempt in their home. Before long, one of the responding officers, Officer Pete Davis, helps arrange the installation of a new security system, taking extra interest in the couple's case. As a result, the grateful Carrs invite him to stay for dinner and they strike up an unexpected friendship. However, as the lonely policeman develops an intense fixation on Karen, his take on friendship develops into a dangerous obsession soon becoming the Carrs' worst nightmare.