Russian girl Nika comes to London, where a few years ago her sister Jen disappeared. After uploading a message addressed to her missing sister on her social media, Nika receives an SMS from an unknown number. This SMS gives her a hint, thanks to which our protagonist takes up her own investigation. She begins her investigation in a place where nowadays you can find everything and everyone – the internet and social networks. New leads bring Nika to a small town on the outskirts of London where her sister lived and worked before she vanished. It turns out that Jen was going out with the lead singer of the local rock band that became popular immediately after her disappearance. Stories from Jen’s best friends don't match up, the details of Jen's life seem strange, and the rock stars raise suspicion. Without letting go of her favorite player, Nika gets involved in a game that could cost her life, unaware that the answers she is looking for can be found in the player.