Rob Lowe doesn't want to get serious. Demi Moore doesn't want to get used. Together, they're an unforgettable couple in the sexy, contemporary comedy. After drinks at a favourite Chicago hangout, Danny Martin (Lowe) and Debbie Sullivan (Moore) head to Danny's place to indulge in the predictable single's quest - the one-night stand. Their affair is casual, sensual, and supposedly over until something surprising happens. They want to see each other again. It's the start of an intense relationship that irritates Danny's rowdy best friend (James Belushi) and astounds Debbie's cynical buddy/roomie (Elizabeth Perkins), who do everything possible to break them up. But, Danny and Debbie wind up living together, and midst the daily drudge of domestic life, they begin to realise that making love is easy, saying "I love you" more difficult, and being in love the hardest of all.