Miniseries
When a fearsome and ancient species emerges from the ocean, dramatically revealing themselves to humanity, an international crisis is triggered. With the entire population at risk, UNIT step into action as the land and sea wage war.
01 Homo Aqua
44mBarclay's ordinary life becomes a world of terror when an ancient species rises from the sea. As UNIT fights for control, the summit on the Thames reveals terrifying secrets.
2025-12-07 6.2
02 Plastic Apocalypse
48mBarclay becomes humanity's ambassador when the mysterious Salt emerges from the Tank. But his family's life is torn apart when Salt wreaks revenge upon all mankind.
2025-12-07 6.2
03 The Deep
45mBarclay makes a terrifying descent into the world of Homo Aqua. Back on the land, Kate stands alone as Downing Street conspires with the army to change the course of the war.
2025-12-14 5.6
04 The Witch of the Waterfall
46mBarclay and Salt go on the run in a war-torn London as UNIT reels from disaster. But when Tide threatens the land and Gunsberg advances his plans, the Severance schemes demand blood.
2025-12-14 5.4
05 The End of the War
54mBarclay stands alone, Salt is lost, UNIT is powerless, and the oceans rise as the war reaches its climax. While traitors conspire, can Barclay find Salt before it's too late?
2025-12-21 4.8
Who is in it
Russell ToveyBarclay Pierre-Dupont
Gugu Mbatha-RawSalt
Jemma RedgraveKate Lethbridge-Stewart
Ruth MadeleyShirley Bingham