In 1862, daredevil balloon pilot Amelia Wren teams up with pioneering meteorologist James Glaisher to advance human knowledge of the weather and fly higher than anyone in history. While breaking records and advancing scientific discovery, their voyage to the very edge of existence helps the unlikely pair find their place in the world they have left far below them. But they face physical and emotional challenges in the thin air, as the ascent becomes a fight for survival.

Ever since US Diplomatic Security Service Agent Hobbs and lawless outcast Shaw first faced off, they just have traded smack talk and body blows. But when cyber-genetically enhanced anarchist Brixton's ruthless actions threaten the future of humanity, they join forces to defeat him.