The past few days have not been easy for Laurianne and her friends, and things don't seem to get any better. Despite the hours spent trying to find out who the perpetrators are behind the Facebook page that makes Margot's life so miserable, Laurianne faces a wall. She may have to seek help in the darkest corners of the internet, with all the dangers that entails. At school, Sarah-Jade's plague continues to reign as a tyrant, but Laurianne has a plan to put her in her place. Only, she cannot involve her friends, because they could all have serious problems. As if that were not enough, disturbing events are reported on the servers of The League of Mercenaries ... Gamers say they have been the prey of bizarre attacks, as devastating as they are devastating. If some theories are far-fetched, the most serious are shivers. This does not prevent the four friends from perfecting their training for the League tournament which must take place in a few days. If only they knew what to expect ...