ValÔeriane is a fan of extreme sports, but she has a phobic fear of walking on a line of the pavement, of these famous cracks. At school, she joins the superstitious club alongside Piment who has all the superstitions, Alex who always has to eat a sandwich cut into wedges, and MaÞeva who knocks on all the doors before come in. Although the club is annoyed by the rebellious Theodore, the gang will undertake to brave each of their fears with mutual aid.