New York, 2000.
The United Nations has just planted its flag on Mars, and a Green Party senator is about to become the first female president of the United States. At a party in the almost-Utopian world, Kate and Ben fall in love.

London, 1593.
Kate wakes as Emilia, mistress to a nobleman and friend to a lowly court poet called Will. Afflicted by apocalyptic premonitions, she sets out to save the world.

Each decision she makes as Emilia will change Kate's life with Ben forever.