Spring of 1794, Poland is in a state of unrest. General Tadeusz ‘Kos’ Kościuszko returns to the country, planning to ignite an uprising against the Russians by mobilising Polish gentry and peasants. He is accompanied by his faithful friend and former slave, Domingo. Kościuszko is being tracked down by a merciless Russian cavalry captain, Dunin, who wants to do whatever it takes to capture the general before he starts a national revolt.

Diagnosed as an autistic child, Grzegorz lives in his own, hermetic world not being able to connect with others. When he is a teenager, it turns out that the cause of Grzegorz’s isolation is not autism but a deep hearing impairment, underneath which a great musical talent has been hidden for years.

A member of a therapy group is found dead. A prosecutor and a police officer try to solve the mystery of his death.