Jenny, a single mother raising two daughters after her husband leaves, is aided by her widowed mother, Mary. But Jenny struggles to stay afloat after Mary suffers a devastating stroke and develops dementia. Finding herself torn between her own life and the wellbeing of her mother, Jenny soon discovers that another way could be possible – but she’ll have to fight for it.
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.