Leaving Earth behind is hard, but what's ahead, on Europa, could be worse. The International Space Training Camp continues to hide the truth about what happened to the last group of astronauts who attempted a similar colonization but failed mysteriously. Naomi is determined to find out if there is alien life on Europa before she and her crew get there. Leo, back on Earth, has been working with renegade scientist Dr. Greta Wagner, who promises to fly him to space where he can essentially latch on to Naomi's ship. When a deadly entity makes itself known to the Final Six, the questions the ISTC has been avoiding about the previous failed mission get answered in the worst way possible. The dream of establishing a habitable domain on Europa is becoming a nightmare.