故事讲述二百年后的未来,人类殖民太阳系。由于重力的影响,太阳系的人类逐渐分成了地球人、火星人和以小行星带为主的谷神星人,彼此之间的关系由于资源的争夺而变得紧张。警探Josephus Miller(托马斯·简 饰演)连同船长Jim Holden(史蒂文·斯崔特 饰演)与他的船员一起揭发了一个威胁秩序和平及人类生存的阴谋。Two hundred years in the future, in a fully colonized solar system, police detective Josephus Miller (Thomas Jane), who was born in the asteroid belt, is given the assignment to find a missing young woman; Julie Mao (Florence Faivre). Meanwhile, James Holden (Steven Strait), the first officer of an ice freighter, is witness to an unprovoked attack upon the ship, by craft believed to be from Mars (MCRN Federation). As news of the attack spreads throughout the system, the incident's flow-on threatens to destabilize already tenuous relations between Earth, Mars and The Belt. Far away from the struggles in deep space, on Earth, Chrisjen Avasarala (Shohreh Aghdashloo), a powerful United Nations executive and diplomat, works to prevent war between Earth and Mars by any means. Soon, the 3 find out the missing woman and the ice freighter's fate are part of a vast covert conspiracy which threatens all humanity.