Carried off to Grainelier headquarters on suspicion of being a harmful seed carrier, Luca finds himself at the mercy of Special Researcher Nicolas. But Nicolas and his ilk are not what they seem, and at the elite Grainelier's behest, Luca passes himself off as a fellow Institute researcher...only to end up cohabiting with Nicolas himself!
Meanwhile, Abel, driven to rescue his childhood friend, takes up with Insecte, an anti-Grainelier group.
But when a certain incident lands him in a life-or-death situation, Abel might have to focus on saving his own skin first!