After the first real test of Project INDIGO, a device made of scavenged Sontaran teleport technology, went horribly wrong; U.N.I.T. HQ scrambled to undo their mistake. While two of their finest soldiers struggle to survive in the deserts of an alien planet, the call goes out for volunteers, people ready to go above and beyond the call of duty and the scope of human understanding; to risk life and limb to see new worlds, and bring two of their own back home safely.