Luke Rutherford is your average teenager – until his dead father's best friend, Rupert Galvin, turns up. Galvin has come to tell Luke his secret destiny: he's the real-life great-grandson of Abraham Van Helsing, the vampire hunter in Bram Stoker's Dracula. Luke is set to inherit the family mantle as a warrior against the supernatural entities swarming the earth.

Unfortunately, powerful Half-Life, Gladiolus Thrip (Mackenzie Crook) is standing in his way.

Six-year-old Madge might think her sister has been ‘taken up to heaven by an angel’ but Galvin suspects otherwise. Everything points to half-life involvement and he thinks it’s the perfect project for Luke.

A visit to zombie priest, Father Simeon (guest star Richard Wilson) confirms Galvin’s suspicions. Gilgamel is no angel – he’s a demon, a travesty demon, a Type 9 entity attracted by the odour of sanctity. Can Luke rise to the challenge?

When a bad boy vampire arrives on the scene and Mina starts behaving strangely, Galvin gets suspicious. Mina confesses that Quincey is back. He has come for her – he wants her to give in to her half-blood heritage. Galvin reassures her that he, of all people, understands – but they both know that sentiment has no place in the smiting game. One thing’s for sure - a battle of epic proportions is in the offing…

Mina and Galvin's investigation of a murder lead them to believe that Luke is in danger. Whilst Luke is lying low Mina starts having visions of a winged beast; Galvin and Ruby are concerned that Luke's new love interest is a low life who had taken the form of a beautiful female to trick its prey.

Luke becomes haunted by dreams about the car crash that killed his father and Galvin's connection to it. A visit to a psychic convinces him his godfather is not the man he seems and, with Gladiolus Thrip back on the scene and showing an unhealthy interest in Luke's past, the vampire-fighting duo look set to be torn apart.