Giuseppe Bonito's L'Arminuta is based on the bestseller that won the 2017 Campiello Prize by Donatella Di Pietrantonio - who also collaborated in writing the film's subject and screenplay, maintaining a stylistic and ideal continuity with the novel. 
We are in central Italy in the mid-1970s, presumably in the Abruzzo hinterland where the author of this book was born. Poverty and harshness dominate the lives and minds of the locals. A 13-year-old girl, the so-called Arminuta (the "ritornata," the returned, in Abruzzi dialect), arrives at a farmstead from the city, where her family lives. When she was only six months old, her natural parents "sold" her to a wealthy city cousin, who is now returning her like a parcel.