A hundred years ago, five young students joined the newly established Communist Party of China.Amidst the changes of the times and the tortuous revolutionary road, they are heading for a different destiny. Those who stick to their original aspirations and have a firm belief will eventually be remembered by history. They are unsung heroes and people's heroes.

This film tells the story of Ma Jun, an early revolutionary martyr of the Chinese Communist Party. After joining the Party in 1920, he organized the May Fourth Movement, helped establish underground Party branches in Northeast China, and studied in the Soviet Union. Upon returning, he was appointed Secretary and Organization Minister of the Beijing Municipal Committee. Ultimately, he was betrayed and died heroically for the revolutionary cause.