Watch FMovies. In this film, Humbert is on the trail of his own history. Wolfsgrub is the name of the house where Humbert's mother lives, and though she is getting on in years, she becomes young again as she answers her son's questions. Humbert allows his mother the space and time to tell her story, portraying he everyday life through the use of concentrated images. From the bits and pieces of these narrative fragments, a stunning portrait of a freethinking woman emerges.