A woman from Switzerland turned to the famous detective Drongo with a request to ensure the safety of her ex-husband, the well-known oligarch Ilya Smykalov. Drongo was about to refuse the case, because he is an expert in especially serious cases, and not a bodyguard, but soon changed his mind. And the reason for this was not the high fee, but the information received by the detective, which instantly transferred the oligarch's case from the category of banal to the category of unique. Drongo set to work, not even suspecting that the disclosure of this crime would lead him to unexpected and paradoxical conclusions, and the investigation itself would become one of the most unusual in his career ...