At the bedside of her dying mother, a poor young girl is surprised by a mysterious man. The latter makes her a strange proposal: that she marry a stranger. In exchange, he promises her that her family will never be in need again. All the same, there is a constraint: that she follow her future husband into the forest, after the wedding... Out of the question for the young girl! But time is running out as her mother's condition continues to deteriorate. What to do?