Alex Hatz

Canadian actress and filmmaker Sarah Polley investigates certain secrets related to her mother, interviewing a group of family members and friends whose reliability varies depending of their implication in the events, which are remembered in different ways; so a trail of questions remains to be answered, because memory is always changing and the discovery of truth often depends on who is telling the tale.

With the world under attack by deadly creatures who hunt by sound, a teen and her family seek refuge outside the city and encounter a mysterious cult.