Divorcees Elyot and Amanda unwittingly book adjoining rooms while honeymooning with their new spouses - Sybil and Victor. Realizing a pair of mistaken marriages, Elyot and Amanda attempt to escape their mismatched partners together. With haste and under the cover of darkness, they flee their honeymoon accommodations and unsuspecting spouses in search of respite within Amanda's secluded Paris flat, only to be discovered several days later by their jilted lovers while in the midst of the most compromising of situations.