Set in the future on a war-ravaged Earth, four exhausted soldiers man Sentinel - a remote military base in a vast ocean that separates two warring continents. While their tour of duty ended three months ago, the relief crew still hasn't arrived and as the empty weeks turn to months, paranoia descends, testing relationships to breaking point...

Brazilian mission commander Sam struggles with establishing a stable connection from Earth to his lover. German scientist Joy explores planet Kepler 452b at her research facility for Alchemy Plasma, a revolutionary energy source. Their long-distance relationship faces doom, when alien Dardesh invaders attack the human outpost, 1400 light years away.