How does a community process the silent complicity behind the disappearance of a teacher during the last civil-military dictatorship? Where are the traces of the denunciation? After the kidnapping and disappearance of Spanish teacher Luis Oscar "Pato" Lacoste, the governing body of the National School of Lobos (Buenos Aires province) classifies his absence as "abandonment of duty." Silvana, a teacher recently arrived in the town, tries to reconstruct an unresolved past.