Snivel and Bobo have reserved a surprise for Navis: they have set up an exhibition dedicated to the history of humanity! But in the midst of a vernissage, a terrorist pops up and explodes! Navis then discovers the history of the Ftoross. From absolute poverty, decimated by illness in the general indifference of the convoy, the Ftoross are reduced to terrorism to make known their fate. Their ultimate hope: threaten to remove Navis, which alone represents an entire race.