 Rui and Vani return to the church where they got married just the previous day to try to cancel their wedding with the priest. The problem is that they haven t married one with another! They tell the priest the whole story: Vani married Sérgio, and Rui married Marta. But problems begin in the first night of the new married couples, and confusion emerges when Vani discovers that Sérgio has had sex with another woman the night before the marriage and seeks shelter in Rui and Marta s apartment, just across the street.