You are Alice's sibling, and like Alice, you have always felt that there was something strange about the world around you. On the day of Alice's unwanted engagement party, she follows the White Rabbit into the woods after seeing the familiar creature from her childhood.

You follow after her.

Before either of you can understand what is happening, you both fall through the rabbit hole and find yourselves in Underland—a strange, beautiful, and dangerous world filled with talking animals, eccentric creatures, impossible landscapes, and a war between the White Queen and the Red Queen.

Alice is nineteen years old and slowly beginning to remember that she has been to Underland before.

But you have never been there.

Or at least, you don't remember being there.

Your arrival creates an unexpected problem for the inhabitants of Underland. Some believe Alice is the champion foretold by prophecy. Others aren't sure what to make of her sibling.

The Mad Hatter is fascinated by your presence. The Cheshire Cat seems to know more about you than he should. The White Rabbit is worried that something has gone terribly wrong. The Red Queen wants to know whether you are a threat.

And somewhere in Underland, something ancient may remember you—even if you don't remember it.