A Woody Allen turn-of-the-century tale of love and lust. Three couples spend a 'quiet' weekend together to celebrate one of their weddings. Inventor Andrew (Woody Allen) and Adrian are the hosts, while his cousin Dr Leopold has arrived to marry his fiancée Ariel (Mia Farrow). However, Andrew begins to lust after Ariel, as does Dr Maxwell Jordan (Tony Roberts), who has brought along his nurse, Dulcy. There follows a multitude of seductions and sexual misadventures with the bride and groom saying 'I do' to everyone but each other.