A group of friends plan to smuggle a ton of marijuana from Mexico to the US by using a hot-air balloon.

After a failed bank robbery, an ex-con, an ex-waitress and a few of their friends train a pack of doberman dogs to rob a bank for them.

The San Francisco area is beset by a series of seemingly random murders without motive or pattern. The police are taunted by phone calls and letters. Could the maniac be the violent, truck driver, or the seemingly mild-mannered mailman, or even a cop?