In front of María's house (67) and Julio (69), there are two acacias, very old. Their branches are connected and they seem to form a single glass. One of them has the whole appearance of being dry. When it arrives the spring and they grow green, it is not possible to distinguish if the grown leaves are of one or of the two trees. María and Julio discuss: she believes that it is dry and that it is necessary to throw it below; she fears that it can fall on somebody. He doubts and believes that it is not still died, and he waters it, like in an act of faith. Julio planted that acacia when one of his children was born and it is not he easy to admit what María says. Connected with this conflict the life of two characters it is knitted in a house of more than a hundred years. The visit of some neighbor, a party, the memories and the ghosts, the rain and the dreams, the stocks reiterated day by day, the stations, the variations of the lights and of the shades, they build the plot, so that everything, silent and irreversibly, speak to us of the step of the time.