In 1974, a young scientific genius Philip Carvel meets an idealistic security services agent, Milner at a secret forum of political, industrial, financial and academic leaders. Milner is in charge of a powerful shadowy organisation known only as The Network. Together they hatch a radical plan they believe will save the human race from the horrific ramifications of over-population...

Five years later, in the 1979 winter of discontent Carvel is tormented by his love for his daughter Jessica and his guilt over what he has done to his son and is beginning to lose his mind. He has made an adjustment to Janus and is refusing to release it to Milner. But a determined Milner refuses to let either political events or Carvel's impending breakdown get in the way of their goal.
(thetvdb.com)

Le meilleur épisode de la série à mes yeux. Mais ayant regardé la saison 1 il y a 3 mois, j'étais un peu perdu.