Affleck will lead the sci-fi tale.

Casey Affleck and his ‘Ain’t Them Bodies Saints’ writer/director David Lowery are reteaming for ‘To Be Two,’ a sci-fi thriller adapted from a short story from the ‘Into the Silent Land: Travels in Neuropsychology’ collection by Paul Broks.

Per THR, the tale is set in “a world where teleportation exists and people are scanned, the digital self sent to Mars, reconstructed atom by atom, while the original is vaporized. The story then posits the idea of the teleportation machine malfunctioning and not vaporizing the original person. Who is now real? And how do experiences make them different? And what happens when the authorities want to erase the original person?”

Affleck will executive produce the movie with Lowery, Toby Halbrooks and James M. Johnston of Sailor Bear.

The pair’s first collaboration, the western-infused thriller ‘Ain’t Them Bodies Saints’ co-starring Rooney Mara and Ben Foster, opens in Irish cinemas September 6th.