In the near future, a new ice age has begun. Humanity stands on the brink of extinction. Desperate for answers, scientists send probes into the solar system to take readings. Near Mars, they identify a mysterious object moving toward the Sun. Is it the cause of the ice age? Or could it be humanity’s only hope of survival? With time running out, NASA launches a mission to make contact. But the object isn’t what anyone thought. In the dark of space, alone, the team makes a discovery that will change the course of human history—and possibly end it.