Alain Moire-Petrukhin was cruelly deceived in his expectations: his beloved Sonya fled from Paris, where they wanted to celebrate Christmas. In order not to be left alone, Alain goes to distant Tanzania and immediately stumbles upon the corpse of a local resident of Ngala... Sculptor Jimmy Nguma devoted all his energy to working on the precious figurine of Black Marie, which he dreamed of donating to the temple. Now the figurine has disappeared, and the master’s assistant, suspected of kidnapping it, was found dead...Russian black Lenya Kuyate was going to relax in the homeland of his ancestors, when suddenly the Tanzanian police pinned several crimes on him at once, and now he has to rely only on amateur detective Alain ...Black Marie is the goddess of the moon of the hot continent, and just as the face of the lunar month is changeable, its deity is just as capricious - Marie punishes and pampers, and only a few know the true value of her love...