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.

This feature-length Oscar®-nominated documentary focuses on Malcolm Lowry, author of one of the major novels of the 20th century, Under the Volcano. But while Lowry fought a winning battle with words, he lost his battle with alcohol. Shot on location in four countries, the film combines photographs, readings by Richard Burton from the novel and interviews with the people who loved and hated Lowry, to create a vivid portrait of the man.