At the twilight of their thirties and with eight years of marriage, Oscar and Natalia buy an apartment in hopes of beginning a more numerous family. Already accommodated and to celebrate their newest acquisition, they decide to throw an inauguration dinner, inviting parents and brothers alike and for which they have great expectations. When the day finally comes, the party arrangements are ruined by months of betrayal, abruptly unveiled. Oscar discovers that Natalia has been involved with another man for the last couple of months. She, while Óscar expresses his indignation, reveals that her infidelity has been fueled by vengeance for he has also been involved in a marital infidelity for a long time. After a violent confrontation, the guests finally arrive. The marriage faces the aftermath; the two of them are pushed to make a decision regarding their future, which will drastically compromise their present as a couple.