The recently opened “MKM Detective Agency” of Bridget and Paul is on the verge of ruin both because of the frantic temperament and questionable methods of their colleague Bunny McGarry, and because of constant intrigues from competitors. Meanwhile, not only influential opponents force characters feel something like a persistent migraine. The ghost of a Federal Bureau of Investigation agent, whose body Bunny believed was buried forever in the mountain abysses, suddenly appears to haunt him and slowly drive him mad with memories. But in the very heart of this intricate story lies the key to unraveling a mystery that will change all the heroes’ ideas about the past and the future.