The Reach is a giant transit hub and skyscraper with the only remaining space elevator ("The Wire") connected to an orbiting space port. Escape from the ruined Earth is only for the rich or lucky few sponsored for emigration off planet to one of the distant space colonies via The Wire. Who leaves Earth and gains access to the Reach and the Wire is decided by corporate interests in The Consortium.
Book 2, Landfall, picks up where Book 1, The Reach, terminates its story with Knile returning to a ruined and polluted Earth to rescue his friends on terra firma, his proxy "family", from the malice of the rich, corrupted law enforcement, underworld figures, and inescapable toxins in the environment slowly killing anyone remaining on Earth.
A sequel to a sci-fi novel can be dangerous ground for an author. Often the follow-up story is either merely an unbroken continuation of the previous plot "to the letter" (See Jack Campbell's "Lost Fleet" series), or an insipid attempt to keep alive the inspiration and story that ended in the first book. Landfall, by Mark R. Healy, is neither of these things, but a rewarding sequel expanding its plot and characters for readers hungry for more after Book 1.
What separates Landfall from its prequel is an author growing in capacity and skill as he hones his writing into richer prose and skillfully connected expositions. The reader is drawn into the story through several intriguing sub-plots and developed lesser characters tied to Knile and Book 1's plot and foreshadowing.
Landfall is in some aspects a better novel than its (very good) predecessor The Reach, which leaves the reader with a growing sense of anticipation and excitement as to how the protagonists and antagonists we have come to love or hate will end their story arc in the next sequel. Mark R. Healy continues to wet the reader's appetite with The Reach, and now Landfall, leaving no doubt Book 3 will culminate in a story apex sure to please.