Returning to Fort Bow, Blutch and Chesterfield on the evening of the 20-year-old Amélie ball, Colonel Appletown's daughter. Although Bryan did everything possible to avoid the inevitable, Chesterfield discovered that a young lieutenant had already offered a bouquet of flowers to Amélie and invited her to dance. Seeing in this lieutenant a rival, Chesterfield decided on a head-up that she had to be shot down, before she was delighted... With Blutch, they decided to go and have a drink at Joe's, the local bar, to change her mind. At the bar, while Chesterfield was drunk dead, Blutch took the defense of a young Indian abused by two bullies. This altercation triggered a general fight. The fort was warned and it was the young lieutenant in question who had to intervene. Soon the situation was going to degenerate between Chesterfield and that white-bec.