This is an automatically translated description

When her only daughter disappears without a trace in broad daylight, Liana is nearly driven mad with grief. There are no witnesses, and the police offer no comfort. Days pass, and with them the hope of finding the child alive fades. In desperation, Liana turns to her former IT classmate, who lives as a hermit and never leaves the house. There are rumours that he can find anyone online.
And indeed, Stas turns out to be an expert in OSINT (open source information retrieval) technologies. He begins his own investigation, not realising that this thread is only the first in a series of terrible crimes, and that these events will turn his whole life upside down...