3/6 The alien intelligence, the Animus, coerces the Doctor into tracking down the Menoptra.
2/6 Rescued by the Menoptra, Barbara is then captured by the ant-like Zarbi.
1/6 The TARDIS is drawn to the barren world of Vortis. The Doctor and Ian find an acid pool.
4/4 Inspired by the Doctor, Nero sets Rome ablaze. Ian must fight his way out of the arena…