Rocky IV is part 4 of the sports drama series, also written, directed by, and starring Sylvester Stallone in 1985.
Ivan Drago, a boxer from the Soviet Union figths against Apollo Creed, who is now Rocky's best friend. Apollo is beaten bedly and dies.
Rocky decides to fly to the Soviet Union and fight Drago. If you want to know how this match ends, you got to watch Rocky IV.
