(The DOCTOR shoves the Chairperson out of the room. He's attacked the guard! OXYGEN ROOM
(OAK and QUILL enter the OXYGEN STORE ROOM. The Weed creature starts to follow.) The pipeline, quick!
Plan: A: the pipeline; Q: Where is the Weed Creature poised to burst out of? A: the base; Q: What is the Weed Creature poised to attack? A: Quill; Q: Along with Oak, who else is a vital clue to the Weed Creature's weakness? A: its weakness; Q: What does the Doctor learn about the Weed Creature from Oak and Quill? Summary: With the Weed Creature poised to burst out of the pipeline and attack the base, an encounter with Oak and Quill gives the Doctor a vital clue about its weakness.