D-3 before the big day when Jean-Pierre and Marjorie will (finally) say "I do" in the Basque Country at the parents of the future groom. But the organization of Roxane, which seemed to be regulated like music paper, is going to be largely disturbed by a crescendo of unforeseen events in any kind.
Lola Bouvier, 25 years old, fallen figure skating star with an oversized ego, decides to become "the greatest roller derby champion of all times" by integrating, in spite of herself, one of the worst teams in France: the Cannibal Licornes.