the movie tells the story of Nguyen Ai Quoc's activities in Thailand in 1928-29 to prepare for the establishment of the Viet Nam Communist Party, comprising three groups: Dong Duong Cong San Dang (Dong Duong Communist Party), An Nam Cong San Dang (An Nam Communist Party) and Dong Duong Cong San Lien Doan (Dong Duong Communist Union). The leader adopted the alias ‘Thau Chin'.