Alan Turing is an outstanding English mathematician and logician. During World War II, he was recruited by the government, appointing him chief at a scientific research center. The main task of his team is to crack the code of the German Enigma encryption machine, which the best minds of the whole world could not do. He is recruiting a team of the best specialists, but he still fails to achieve a positive result. Realizing that only another machine can handle a unique machine, Alan decides to create a decoder. The scientist is completely immersed in this work, but can he achieve the desired result?..