Captain America: Civil War
While the Avengers fight over the Accords, a Sokovian man named Helmut Zemo finds the Winter Soldier's old Hydra commander and asks him for information on the 1991 mission from the flashback. When the commander doesn't tell him anything, Zemo kills him and steals a red book with commands. The UN holds a conference in Vienna, Austria to pass the Sokovia Accords but a bomb goes off and destroys the building, killing the Wakandan King T'Chaka. Security footage shows that the bomber was the Winter Soldier, and the cops hunt him. Knowing that Bucky was framed by the real bomber, Steve wants to find Bucky before the cops do. Meanwhile, T'Chaka's son, T'Challa, swears to find and kill Bucky in revenge for his father's death.