Literally by touch, Alex Bruce, an officer of the Paris criminal police, and his faithful companion Martina Levin are forced to find traces of the mysterious and merciless Cobra, who ingeniously and steadily destroys his enemies. Those close to the mysterious Cobra, not realizing that the snake is hiding among them, are trying to discover it in other places, sweeping away everything in its path... And it never occurs to anyone following the Cobra’s trail that the trail leads to a story of broken love, betrayal and... scientific openings.