This is almost a classic detective story... A neighbor at the dacha told Igor Savenkov a secret - she kept a suitcase with museum valuables that her father brought from defeated Berlin in 1945. It seems to her that a hunt for treasure has begun. Three days later, the old woman is killed!.. For Savenkov, as the chief of the detective agency "Sova", solving this crime becomes a matter of honor. There are a lot of suspects - the old woman's nephew, and his partner, and neighbor, and editor, and saleswoman. More and more evidence appears for each of them. Against everyone and everyone!.. The action is developing rapidly! Witnesses hide, an innocent journalist goes to prison, and a new murder is committed in the old woman's apartment. And all this in front of the “Owl” employee Krylov. After the next corpse, Savenkov decides to call fire on himself and set a trap for all the suitcase hunters... All but one fall into the mousetrap!..