Kafka movie plot

Kafka is a famous master of Expressionism in the 20th century . This film uses him as the hero, but it is not a serious biopic, but a rather unique political thriller based on a bizarre encounter in his youth. At the time, Kafka was a small clerk in an insurance company. Although he had received acclaim for his book "Transformation", he was still withdrawn and introverted and did not interact with colleagues. One day, the only colleague who had close contact with him died unexpectedly. His fiancée couldn't accept the police's claim that it was suicide, so she asked Kafka to help find out the truth. Since both of them are anarchist revolutionaries, the group asks Kafka to join the group and help write the leaflet. Kafka refuses and gets caught in the center of the maelstrom, where he discovers the horrific truth.