Kogda svyatye marshiruyut

The Leningrad Jazz Club is preparing to celebrate its 30th anniversary and the birthday of the club's founder, Alexei Sokolnikov, the first leader of the jazz band. It has been decided to find all the original members of the band and invite them to the celebration. But this is not so easy to do, and there is also a mystery lurking in the past that led to the band's breakup...