The Half of a Boy.

In English known informally as "The Half of a Boy" and "Stepmother". Based on the novel by Kálmán Mikszáth. After his wife's death Gáthy Lörinc (in Serbian version: Mr. Wickfield) remarries and in secret he takes his son born from this second marriage to the same foster parents who take care his first son born from his first marriage and left without mother. Five years later, when both boys return home, his wife does not know which is her own child, and which is the child of the previous wife, so the husband's desire is fulfilled, his orphaned son doesn't have step-mother, because his wife loves both boys equally, as her sweet children.