Nowadays, deep in Louisiana, a young man who has discovered a dark secret linked to the local mafia tries to flee with the evidence but is caught. However, at the moment of execution, he's saved by the intervention of a strange and huge reptilian creature with several heads. A week later, his sister, who had not been to this region for a long time, returned to New Orleans to find her brother missing. Many problems will try to come between her, but whether it's the mafia or the corrupt police, no problem will be more imposing than the creature that has settled in the swamps : the Lernean Hydra ! This enormous creature, which grows two heads if one is cut off, isn't a simple beast, it's very cunning and angry !
