Captain Alexei Korolev has nothing to complain about. But for the first time in a long time, Korolev is about to be truly happy: his son Yuri is coming to visit for an entire week. Shortly after Yuri's arrival, however, Korolev receives an urgent call from his boss - it seems an important man has been murdered, and Korolev is the only detective they're willing to assign to this sensitive case. And the consequences of interfering with a case tied to...