Brigadier Lethbridge-Stewart's internal struggle with amnesia and disorientation as he encounters the Doctor, forcing him to confront his forgotten past and identity.

The Doctor lands the TARDIS in a walled garden in 1983, stepping into a role he never expected for his oldest friend. The Brigadier, now teaching at a remote boys' …

The Doctor crash-lands in 1977 and reunites with his old ally Brigadier Lethbridge-Stewart, now teaching mathematics and gripped by a deep amnesia suppressing decades of shared history. As the Doctor …