Limbo is a secluded colony of child-vampires who are anything between 4 and 120 years old, all having all been victims of 'shameless' adult vampires.
A young woman joins a group of protesters trying to stop the construction of a highway through a forest with the purpose of having sex with their leader. But when morning comes and the authorities show up to disband the protesters, she hits a man with a log. This causes the two to have to go on the run. With the help of a sickly, but sympathetic woman, the two slip through police roadblocks. Traveling with her, they learn she is an ex-army lesbian who just wants to see a final sunrise at the Orkney Islands before her death.
A serial killer frightens Paris by phoning young ladies at night, telling them insults about their lives. Minos, as he calls himself, wants to prevent the world from free women and so he targets them. Commissaire Letellier is given the investigation and has a hard time with the maniac.