Miracles are happening to house number 7 on Chashchina Street. Three years ago it was resettled and demolished, and now two cases of murders of people registered in these ruins fall into the hands of investigator Masha Shvetsova. Masha begins an investigation and comes across a series of contract killings, the most notorious of which is the public “execution” of the head of the bureau of registration of real estate transactions. Trying to identify the killers, Masha finds herself under the surveillance of the special services - after all, she crossed the path of corrupt GRU employees...