You're sitting on the riverbank, listlessly flipping through a dull history book while your sister reads about William the Conqueror. The words blur into nothing. Above you, a butterfly flutters past—and then, impossibly, a rabbit in a waistcoat checks his pocket watch and mutters, 'I'm late! Late for a very important date!'

You leap up. Dinah, your cat, meows in protest as you chase the White Rabbit to the edge of a hole beneath a tree root. He vanishes inside.

Without thinking, you follow.

Down, down, down you fall—past cupboards, floating teacups, and flickering candlelight—until you land softly in a hallway lined with doors. One tiny door glows. Through it, you see a garden more beautiful than any dream.

A doorknob on the smallest door blinks at you. 'You'll need to change size,' he says. 'The bottle makes you smaller. The cake makes you larger.'

You look at the glass table. A bottle labeled 'DRINK ME' and a cookie marked 'EAT ME' sit under a key.

What do you do?