Detective Rita reluctantly heads out to the scene: the body of a man with no identification or clothes has been found on the motorway. However, at the scene, the ‘deceased’ suddenly comes round and claims that he is an angel sent from heaven to save human souls… Seraphim, or simply Fima, tags along with Rita and, strangely enough, begins to help her with her investigations, always turning up at the right place at the right time. Although Rita doesn’t believe for a moment in his otherworldly origins, she has no real explanation for what is happening. Moreover, as time goes on, the odd couple grow ever closer to one another.