In the mists of the Scottish Highlands, which roll over the bumpy fields and the Minch Strait, islands disappear on the horizon and people disappear from lonely houses... Sixteen-year-old Robert comes home late, as usual, quarrels with his father and locks himself in rooms. Then it disappears without a trace. Just like his mother a few weeks ago. Inspector Monica Kennedy is currently investigating the case of the body, which was found on the north-west coast of the Scottish Highlands. Intuition tells her that this case will definitely not end with one death. Social worker Michael Bach is worried about his young client Nichol Morgan. No one had seen him for seven days, and Michael received a strange text from him. Monica tries to catch the killer lurking in the dark, and Michael continues his desperate search for Nichol. She hopes to find him before the terrifying killer strikes again.