Ann Winters is a statistician for an insurance company and knows her way around the laws of probability. Her theory is that there would be a lot fewer divorces if newlyweds would refrain from consummating their marriage for three months while they get to know each other. Winters decides to test that thesis by applying it to her own upcoming nuptials – much to the chagrin of her groom, who tries in vain to lure her into bed on their wedding night. After a later series of unforeseen events conspire to keep them physically distanced, they both fall victim to suspicions of marital infidelity. Eventually, a separation seems inevitable