Alain, a painter from Quebec, comes across the old and mysterious journal of his great uncle Henri. This man who, as a young soldier, witnessed the horrors of the First World War has been institutionalized since his return from France and has long seemed to carry the burden of a heavy secret on his shoulders. Alain therefore decides to find out more about these disturbing writings.
His investigation leads him to France where he follows the trail of a strange psychiatrist whose assistant is a young woman with erratic behaviour. He also visits an abbey that cannot be fully accessed, and encounters a lecturer who puts forward facts that are beyond understanding.
Two lives, two eras, one and the same secret.