1/4 While on holiday in Paris, the Doctor and Romana experience a time distortion.
4/4 The Daleks need Davros to break the stalemate in their war with the Movellans.
3/4 Davros has awoken from his centuries-long slumber and is taken prisoner by the Doctor.
2/4 The captured Romana is interrogated by the Daleks whilst the Doctor meets the Movellans.
1/4 On Skaro the Doctor and Romana discover that someone is digging beneath the surface.