"When a talented mechanic in 1818 Geneva brings his brother back from the dead using clockwork parts, the citizens of Geneva think they may have inspired the recently published novel Frankenstein"--

In 2172, when much of the world is unlivable, sisters Onyii and Ify dream of escaping war-torn Nigeria and finding a better future together but are, instead, torn apart.

Mendoza, a young woman who has been made an immortal cyborg by the 24th-century Company, returns to sixteenth-century England in an attempt to keep a holly plant that could cure cancer from becoming extinct, but her mission is threatened when she falls in love with a mortal man.