An intimate family party takes place in an exclusive residential neighborhood. Leo celebrates the birth of Izan, her first son, together with her husband Julio, her sister Claudia and her friend Hector. During the party, Claudia goes to fetch her nephew from his crib and discovers to her dismay that he has disappeared, along with Luciana, the nanny. No one has seen anything. The stress and shock bring up old mental problems in Leo. She enters a downward spiral and gradually loses touch with reality. She begins to doubt not only her life, but also her own identity.