Old detective Nikolay Myachikov is being retired by his boss Fedyaev. The official version is that Myachikov solved no crimes during last two months. But the real reason is that Fedyaev's boss wants Myachikov's position to go to another man, Proskudin.
Engineer Valentin Vorobyov, another retired old man and Myachikov's best friend, suggests to Myachikov that they set up the biggest crime ever and then solve it together to stay at work.
The first idea is to steal Rembrandt's picture from a museum. The plan fails as no one notices that the great canvas is stolen. Myachikov and Vorobyov have to sneak the picture back.
The next plan is to rob the Myachikov's neighbour, collector Anna Pavlovna and then to return the money, but do not catch the thief. When Myachikov gets the bag with cash, he meets the real robber. He takes all the money, and next morning the honest detective is obliged to invest his own money to "solve" the crime.
Yuri Nikulin — Nikolay Myachikov
Yevgeniy Yevstigneyev — Valentin Vorobyov
Olga Aroseva — Anna Pavlovna
Georgi Burkov — Fyodor Fedyaev
Andrei Mironov — Yury Proskudin
Valentina Vladimirova — Masha, Vorobyov's wife
Yuri Belov — Petya
Valentina Talyzina — Fedyaev's secretary
Roman Filippov — the robber
Nina Agapova — the museum keeper
Irina Murzayeva — the museum keeper
Lev Durov — the driver of the collector car
Boris Runge — the shoes shop director
Gotlib Roninson — the doctor
Yuri Smirnov — the locksmith
Georgi Kulikov — Vorobyov's colleague
Viktor Bajkov — Vorobyov's colleague
Yevgeni Perov — Vorobyov's colleague
Natalya Sajko — Vorobyov's colleague
Boris Vladimirov — Vorobyov's colleague
Aleksandr Shirvindt — the spokesman of the minister