The film consists of three independent parts: "Workmate", "Déjà vu" and "Operation Y". The plot follows the adventures of Shurik, the naive and nerdy Soviet student who often gets into ludicrous situations but always finds a way out very neatly.

Aleksandr Demyanenko
as Shurik

Aleksei Smirnov
as Verzila (segment "Workmate") / buyer at the market (segment "Operation Y") (uncredited)

Mikhail Pugovkin
as foreman (segment "Workmate")

Vladimir Basov
as a stern policeman (segment "Workmate")

Natalya Seleznyova
as Lida (segment "Déjà vu")

Yuriy Nikulin
as «Balbes» (segment "Operation Y")

Georgiy Vitsin
as «Trus» (segment "Operation Y")

Yevgeni Morgunov
as «Byvalyy» (segment "Operation Y")

Vladimir Rautbart
as professor (segment "Déjà vu")

Viktor Pavlov
as «Dub» (segment "Déjà vu")