20th Century Fox has released a new trailer and poster for the video game adaptation "Assassin's Creed," which stars Michael Fassbender as present-day Callum Lynch as well as his 15th-century ancestor, the swordsman Aguilar.

The trailer begins in the present-day with Lynch in prison. He's taken away to be experimented on to unlock the genetic memories of his ancestor Aguilar, who was a member of the Assassin's Creed in 15th-century Spain. As Lynch is given the wrist gauntlets and wardrobe of Aguilar, the trailer flashes back 500 years to the Spanish Inquisition.

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Lynch says, "What I saw in there felt real," as scenes in the past show assassins dashing across rooftops and striking at their targets. Lynch uses these new skills and knowledge to take on the oppressive and powerful Templar organization in the present day. The highlights of the trailer are the amazing stunts and fight choreography, which is reminiscent of the Ubisoft video game.

The latest poster is split down the middle, with one side displaying a robed Aguilar in the past, and the other side showing Lynch in the present. The title reads, "Your destiny is in your blood."

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Directed by Justin Kurzel, "Assassin's Creed" arrives in theaters Dec. 21 and also stars Marion Cotillard, Michael K. Williams, Jeremy Irons and Brendan Gleeson.