1928 The deputy editor-in-chief of the popular newspaper “Red Worker” disappears. There are rumors that he ran away from his wife, but then it turns out that the editorial coffers are missing a huge amount. Aspiring detective Ivan Opalin is involved in this case. The investigation is complicated by the fact that a journalist from the newspaper is assigned to it, who was tasked with writing a series of essays about the work of the criminal investigation department. Opalin soon realizes that his new acquaintance is a very suspicious person...