Five history college students accidentally took over a mysterious supermarket. They never thought that it would be a time and space hub connecting different eras. As they touched the old items from the Republic of China on the shelves, they suddenly traveled to the turbulent Nanjing in 1936 and plunged into the historical torrent on the eve of the Anti-Japanese War. From the flames of war in the North China Plain to the secret war in the forests of Northeast China, from the smoke of the civil war between the Kuomintang and the Communist Party to the exotic fighting on the Korean battlefield, finally, proletarians all over the world, unite! On this magnificent journey spanning 1936 to 1955, red flags were planted all over the world. They were not only witnesses of history, but also participants in fate.
