"Post Restant" is about two engineers: Puiu (Iurie Darie), a quite shy character, and Dan (Ion Dichiseanu) an alpha male type. They receive a letter from Liliana, a letter which is actually meant for the former apartment owner. Puiu replies to the letter, although he does not know the sender. The mail exchange goes on and the two fall eventually in love. Being less self-confident, when the time comes to see Liliana in the flesh Puiu asks Dan to meet her and pretend to be the one who wrote the letters.