A Sontaran afraid? A Sontaran. DOCTOR: Yes. HARRY: Invasion? Is that the Sontaran way? It's the only way. PRISONER: To... To die. STYRE: As we knew, the Earth has not been repopulated. What for? [SCENE_BREAK]
STYRE: Experiment eight: resistance to pressure on the human breast cage and muscular strength.
Plan: A: The Doctor; Q: Who challenges Styre to a duel? A: the Galsec crewmembers; Q: Who has Styre been experimenting on? A: the way; Q: What does Styre want to pave for a Sontaran invasion of Earth? Summary: The Doctor learns that Styre has been experimenting on the Galsec crewmembers to pave the way for a Sontaran invasion of Earth and decides the only way to halt his plans is to challenge him to a duel.