Gregory and his little sister Imogen love spending Halloween with their parents. But this year is different. If he proves he can take care of Imogen all by himself, he'll finally have the allowance he's dreamed of.

That was before the basement door opened on its own. Before the strange door appeared in the basement and Imogen was taken from him by the monster.

Now everyone in town is blaming him for her disappearance, but no one is listening to his story. Where did the door come from? What was that creature? And most of all, can he find his sister before it's too late, or will he bury his memories of her along with his parents?