Kidnapped and transported to an unknown destination, Kate is used as a powerful man's secret toy. When he tires of her, she is drugged and taken back to her home. Neither the police nor her only family, her brother, Bryn, believed she was kidnapped and brought back to her flat. It just didn't make sense as Bryn had received photographs of her and her new husband honeymooning in Europe. Confused but determined to find her kidnappers and bring them to justice, she hires a private detective, Red, but he comes with baggage of his own, which he has to work through before he can help her. Kate advertises and finds another victim, Fiona, who was turned into a drug addict by the Boss, as he's known. Both girls had been tattooed with a weeping spider on the base of their spine. When an international assassin comes after them, Red sends them to a place of safety, where Kate must learn to defend herself. To make matters worse for Kate, she discovers Bryn is gay and a male prostitute to the rich, employed by her ex-fiancé, who organizes these orgies. Tormented by the spider that runs up and down her back, Kate must find her inner strength and, together with Fiona and Red, go down a terrifying path of drugs, sex, and murder, before coming out in a peaceful white tent.