In the year 2200, humanity has achieved interstellar travel and established colonies on planets across the galaxy. Among the explorers is Dr. Rachel Clarke, a brilliant physicist who is on a mission to study the properties of a strange new substance that has been discovered on a distant planet. During her mission, Rachel meets Alex, her crewmate who is a talented engineer. As they work together to unravel the mysteries of the new substance, Rachel and Alex begin to feel a powerful attraction to one another. However, their relationship is complicated by the fact that Alex is already in a committed relationship with another crewmate, Julia.