The film opens with a mercy mission. Trying to stop a volcano from erupting and destroying a fledgling civilization. Instead of using thier superior intelligence and simply dropping the cold fusion device into the volcano from the air, they send Spock inside the volcano to manually set the device; nearly dying and causing the Enterprise to reveal itself to this culture, violating the prime directive. Next time, lob the device from a distance...

After violating the Prime Directive of the Federation interfering with the primitive inhabitants of Planet Nibiru, saving their lives from a volcanic eruption and exposing the Enterprise to them to save Spock (Zachary Quinto), Captain James Kirk (Chris Pine) is summoned by Admiral Christopher Pike (Bruce Greenwood) and loses the command of the Enterprise.

Meanwhile, a Starfleet facility in London is bombed and the high-command has a meeting where the identity of the responsible, the former agent John Harrison (Benedict Cumberbatch), is disclosed. However, Harrison attacks the commanders; kills Spike and flees to Kronos, the land of the Klingons. Admiral Alexander Marcus (Peter Weller) assigns Kirk to kill Harrison and brings seventy-two torpedoes to the Enterprise to accomplish the mission. Chief Engineer Montgomery Scotty (Simon Pegg) refuses to receive the weapons and Pavel Chekov (Anton Yelchin) is relocated to his position and Dr. Carol Wallace (Alice Eve), who is a science officer specialized in weapons, joins the Enterprise crew. When they arrive in Kronos, they are attacked by Klingons but out of the blue, Harrison kills the Klingons and surprisingly surrenders to Kirk after knowing that the torpedoes are on board of the Enterprise. Then he discloses that he is Khan, a superhuman that was awakened by Marcus from a cryogenic pod to prepare the star-ships with powerful weapons for a war against the Klingons. When the Enterprise is intercepted by a mysterious starship commanded by Admiral Marcus, Kirk asks Khan to help him to save his crew.

"Star Trek into Darkness" is a great sci-fi with a good story of Kirk and his crew and a powerful villain. The good acting and direction associated to top-notch special effects make a highly entertaining movie. Surprisingly there are bad reviews in IMDb that must be ignored by those that like this franchise. My vote is eight.

Title (Brazil): "Star Trek Além da Escuridão" ("Star Trek beyond the Darkness")