Jake Scully comes home to find his girlfriend with another man and has to find a new place. In between his acting workshops and his job in a vampire B-movie, he scans the paper looking for anything. He happens to meet Sam Bouchard, a fellow actor who needs a house sitter. Both are pleased with the arrangement that will have Jake staying in the house and for a sweetener, Sam shows him his favorite neighbor, a well-built woman who strips with her window open each night. Jake becomes obsessed with meeting her and is able to help recover her purse from a thief, but shows his own phobia, he is incapacitated by claustrophobia when the thief runs through a tunnel. When Jake witnesses a murder, he finds out that the police love to pin crimes on peeping Toms. Jake discovers that here are just too many coincidences but must hunt them down himself without the police.
At the beginning of the movie, Jake finds his girlfriend riding a guy in bed upon coming home. She is initially surprised when she sees him at the door, but her expression is replaced quickly by a look of contempt towards him, so maybe her animosity towards him has been silently brewing all this time that they're together.
When Jake house sits for a friend, he starts spying on this lady next door using a telescope. One day, he starts following her around because he sees a suspicious fellow following her. She goes to a motel by the beach to meet her lover, but he isn't able to come. Then, the suspicious fellow grabs her bag, so Jake runs after him and retrieves the bag, etc. It ends with Jake and the lady, who turns out to be married, making out passionately by the beach. She pulls away after some time, saying she can't do it, at least not there, and runs away. So that means she is open to extending her newly found affair with Jake but that it should be at the right place, not there. But that doesn't materialize anymore because something happens to her a few scenes later.