Cathy is stunned to find out that Jim, her lover of more than a year, might be having an affair with a woman named Sarah. Torn by this discovery, she is determined to fight for her lover.
When she discovers that it was a mistake, and that Sarah was merely helping to plan a great weekend for her and Jim, she is still suspicious, but once in San Francisco her fears are laid to rest in a very erotic encounter with the other woman, which springs into a life long friendship.