Sebastien Grenier, a former French spy, is working as a financial analyst in Zurich. However, his peaceful existence starts to disintegrate when he is recruited by a top French intelligence operative to discover how one of their own secret agents was found out and executed in broad daylight.

This Civil War anthology adapts three Ambrose Bierce stories "An Occurrence at Owl Creek Bridge," "Chickamauga" and "The Mockingbird."

Chickamauga (1962) is another of Robert Enrico’s three short films based on the Civil War stories of Ambrose Bierce. The withdrawal of hope at the end of An Occurrence at Owl Creek Bridge may seem bleak but that story is positively cheerful beside the horrors of Chickamauga in which a small deaf boy wanders from home to find a new playground in the aftermath of one of the bloodiest battles of the Civil War.