Orbiting a quiet backwater planet, the massed forces of the universe's deadliest species gather, drawn to a mysterious message that echoes out to the stars. And amongst them, the Doctor. Rescuing Clara from a family Christmas dinner, the Time Lord and his best friend must learn what this enigmatic signal means for his own fate and that of the universe.
Following her father's puzzling disappearance, Kate and her city-bred companions brave the untamed backwoods in a desperate search for him. However, the harsh environment becomes a dangerous catalyst for their explosive mix of personalities, propelling them into a world of raw emotion and unbridled passion.
