Noah, a 16 year old boy and his little sister Renie take shelter in a bunker during an air raid where they find a passage to the fantastic dreamscape of Silence - to the Whispered World.
But even here, war ravages the land. Dark creatures lurk everywhere and devour anyone who crosses their path. Only a small band of rebels still resists. The two siblings are caught in the turmoil of the ongoing battle and to survive, they need to rely on the one thing that let them brave any danger: their love for each other.