La trasmissione, ideata da Maria De Filippi e Alberto Silvestri, vede come protagonisti persone comuni che vogliono ricongiungersi con parenti lontani, amori perduti o amicizie di gioventù, ma anche risolvere situazioni rimaste in sospeso. Lo staff, tramite un gentile postino, individua il destinatario e lo invita in trasmissione: solo qui saprà chi lo ha invitato e perché. Separato dal mittente da un grande schermo, il destinatario potrà decidere se spostarlo per potersi così ricongiungere.
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