The Transformers: The Movie is a 1986 animated science fiction action film based on the Transformers television series. It was released in North America on August 8, 1986, and in the United Kingdom on December 12, 1986. It was co-produced and directed by Nelson Shin, who also produced the television series. The screenplay was written by Ron Friedman, who created Bionic Six a year later. The story is set in 2005, 20 years after the TV series' second season. After a Decepticon assault devastates Autobot City, Optimus Prime wins a deadly one-on-one duel with Megatron, but ultimately sustains fatal injuries in the encounter. With Megatron gravely injured, the Decepticons are forced to retreat, saving the Autobots. The Autobots are hunted across the galaxy by Unicron, a planet-sized Transformer intending to consume Cybertron and who transfigures Megatron to become the enslaved Galvatron.