Time is set on Earth, the inner part of the Solar System and various other universes onwards from the 21st century. The novel covers a wide range of topics, including the Doomsday argument, Fermi paradox, genetic engineering, and humanity’s extinction. The book begins at the end of space and time, when the last descendants of humanity face an infinite but pointless existence. Due to proton decay the physical universe has collapsed, but some form of intelligence has survived by embedding itself into a lossless computing substrate where it can theoretically survive indefinitely. However, since there will never be new input, eventually all possible thoughts will be exhausted. Some portion of this intelligence decides that this should not have been the ultimate fate of the universe, and takes action to change the past, centering around the early 21st century. The changes come in several forms, including a message to Reid Malenfant, the appearance of super-intelligent children around the world, and the discovery of a mysterious gateway on asteroid 3753 Cruithne

‘If they existed, they would be here’ ENRICO FERMI. In the second volume in Stephen Baxter's epic Manifold Series Reid Malenfant inhabits the universe Malenfant kick-started in TIME (‘science fiction at its best’ FHM) — and ‘they’ are here. When Nemoto, a Japanese researcher on the Moon, discovers evidence of extraterrestrial intelligence in the solar system, the Fermi Paradox provokes both Malenfant and Nemoto to question why now? Because, suddenly, there are signs of intelligent life in deep space in all directions. Deeper layers of Fermi’s paradox unravel as robot-like aliens, the Gaijin, seem to be e-mailing themselves from star to star, and wherever telescopes point, far away, other alien races are destroying worlds!

This is the third installment in Stephen Baxter’s Manifold trilogy. It sees Manifold regular Reid Malenfant and others once again dealing with possibilities of primate evolution in all forms and grappling with the Fermi Paradox. This time an artifact in the sky transports a select few individuals including Malenfant’s wife to a new red moon which has appeared in place of the moon we know. Blaming himself, Malenfant launches a one man mission to find his wife and solve the Fermi Paradox once and for all

Tied in to Baxter’s masterful Manifold trilogy, these thematically linked stories are drawn from the vast graph of possibilities across which the lives of hero Reid Malenfant have been scattered. Reid Malenfant is the commander of a NASA earth-orbiting science platform. The platform is intended to probe the planets of the nearest star system by bouncing laser pulses off them. But no echoes are returned … and Reid's reality begins to crumble around him. Huddling with his family, awaiting the end – or an unknown new beginning – Reid tells stories of other possibilities, other realities. The linked stories encompass the myriad possibilities that might govern our relationship with the universe: are we truly alone, or will we eventually meet other lifeforms? The final possibility – that the Universe as we know it is in fact an elaborate illusion designed to protect us from the fearful reality – is brilliantly explored in the tour de force novella that ends the volume