High Moon, the latest pilot from creators Jim Danger Gray and Bryan Fuller, has cast its two lead actors.

An adaptation of the John Christopher novel The Lotus Caves, High Moon tells the story of a future in which Earth’s inhabitants have colonized the moon to mine it for resources. When new forms of life are discovered, however, conflict erupts. According to the Hollywood Reporter, Chris Diamantopoulos and Jake Sandvig will star in the 90-minute pilot.

Though the two actors will be playing brothers, their characters could not be more different. Diamantopoulos will play Ian, an American federal investigator, while Sandvig will play Marty, a convict sentenced to hard labor on the surface of the moon. The two have a “complex and antagonistic” relationship, and both Ian and Marty have their own agenda.

In addition to these lead roles, Dana Davis and Peter Macon have joined the cast as series regulars. Davis will play Yama Winehart, the first (and last) child born on the moon; with a pre-natal anti-gravity condition, she can never leave her birthplace. Macon will play her father, General Gale Lynn Winehart, an American Army General with a tough personality and plenty of battle experience (via Deadline).

The pilot, which will air on SyFy, was written by Gray and is based in part on a story by Gray and Fuller (part of the creative team behind Pushing Daisies). Production is expected to begin this fall.