The small Norman village of Allouville is proud of its thousand-year-old oak tree. But one day, a project of enlargement threatens the tree. The deputy Charles Crétois was keen on this project, which allowed him to continue the speculation he had been indulging in on certain lands. He is supported by the mayor of Allouville to whom he promised the Legion of Honor. But the whole village protests: they want to save the oak tree.