After moving house, lonely librarian Beth meets Isaac on her way to work. He is a delightfully old-fashioned gentleman. Sharing the same antiquated tram day after day, the pair become close and Beth suspects she's falling in love. But Isaac has a secret that threatens their budding romance. Something dark and as magical as the tram that picks her up every morning and evening. Why does he suddenly push her away? Is he lying when he says he doesn't care for her? How could she have got the signals so wrong? Then Isaac and the tram go missing and Beth begins to discover the truth. But it might be too late...