Overview
- The five-part series premieres on BBC One and iPlayer on 7 December, with international release on Disney+ slated for 2026.
- The story frames a geopolitical standoff between humanity and the Sea Devils, reimagined as Homo Aqua, over ocean pollution and the climate crisis.
- Russell Tovey stars as UNIT operative Barclay, who forms a fragile trust with Gugu Mbatha‑Raw’s Sea Devil, Salt.
- Davies says the drama directly tackles contemporary targets, including water companies and what he calls their profiteering bosses.
- Industry context includes the end of the BBC’s Disney distribution deal and the Doctor’s return not expected until Christmas 2026, positioning this as 2025’s festive Whoniverse entry.