A man and woman meet by chance at a romantic inn over dinner and, although both are happily married to others, they find themselves in the same bed the next morning questioning how this could have happened. They agree to meet on the same weekend each year—in the same hotel room—and the years pass each has some personal crisis that the other helps them through, often without both of them understanding what is going on.
Steve, a happily married American man living in London meets Vicki, an English divorcée and run off to Marbella for a rollicking week of sex. They then return to London to set up a cozy menage, despite the fact that he loves his wife and children, and now realize that he and Vicki have also fallen in love.
Both dumped by their girlfriends, two best friends seek refuge in the local mall. Eventually, they decide to try and win back their significant others and take care of their respective nemeses.