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...