Docuseries told from the point of view of those left behind after a loved one vanishes without a trace.

In season two, Master Chief John-117 leads his team of elite Spartans against the alien threat known as the Covenant. In the wake of a shocking event on a desolate planet, John cannot shake the feeling that his war is about to change and risks everything to prove what no one else will believe – that the Covenant is preparing to attack humanity's greatest stronghold. With the galaxy on the brink, John embarks on a journey to find the key to humankind’s salvation, or its extinction: the Halo.

In a mysterious primeval land populated by dinosaurs and other extinct creatures, people from throughout human history have been resurrected. When 21st century Australian paleontologist Helena Walker awakes there after tragedy, she must learn to survive and find new allies, or die again at the hands of ruthless warlords, all while trying to uncover the true nature of their strange new world.