ELIZABETH GREY learns that another fallen angel - the terrifying and powerful MOLOCH - is going to try and make a challenge for the rulership of hell. To do this he has to prove himself worthy by carrying out a ritual using a series of Angel Stones that will bring about a permanent evil on mankind. ELIZABETH, in all good conscience and despite the terrible danger, feels compelled to come out of hiding to try and stop him. In this first episode, Elizabeth discovers that one of the nine Angel Stones - the Seraphim Stone - is being kept at St Paul's Library in London. She must battle Moloch's servants, the Venkus Demons, to retrieve the stone.