She's sealed inside his family's experimental world.

He believes she died.

A dangerous secret forever binds their fates together.

Willow Oak Watson has never met a stranger. Never known the open wide sky. Or seen modern technology. Until, that is, her father's shocking death unearths chilling secrets about the experimental world she was born into.

A nature-steeped world where death is ceremonious, built on rules and traditions-ones she resents. And ones her brother, Leaf, constantly holds against her.

But rules change when she and Leaf discover hidden computers and connect to the Outside for the first time-and to Fillion Nichols. An angry young man from a dying, technology-choked society.

Everything about him is forbidden.

But he is the key to decoding the mystery behind her father's possible murder.

She doesn't know Fillion will inherit her home on his twentieth birthday-a legacy he doesn't want. Or that she has tormented his nightmares for nearly six years. Or that the Outside believes she and Leaf are dead. All Willow knows is a strange, unexplainable bond to Fillion.

An attraction that may save or destroy her home.

Worlds collide in an unforgettable quest for truth, unfolding a story rich in mystery, betrayal, and love.