It's Spring 1965, and at last two time travellers have returned home after many adventures with the Doctor. Yet the world has moved on in their absence, and settling back in proves harder than expected.

For Barbara, salvation appears in the form of kindly Angela Leamann, who offers Miss Wright a roof over her head in return for a series of 'psychical sessions'.

Ian, meanwhile, discovers a hidden talent and joins London's growing literary science fiction scene. He sees no harm in drawing upon his experiences with the Doctor - even when his ideas are picked up by a bigshot in television.

Unsuspectingly, the ex-schoolteachers are being drawn into an invisible web...