Rouen is occupied by the Prussian army and a group of ten residents decides to leave town. Although it is not that easy, they manage to get on a carriage. The group is quite colorful as every person represents a different part of the French population during the Franco-Prussian War of the late 19th century. A prostitute is a part of the group and although the others are filled with prejudices towards her, she is the one who could save them all when they find themselves in a Prussian-held territory. Will she put herself before the others and how will they react to this? Find out in "The Ball of Fat".