CHANG: The Doctor! DOCTOR: Where's Litefoot? Leela. To find the confluence of the Thames and Fleet, Professor, then to follow the Fleet.
Plan: A: Leela; Q: Who follows Chang to find Greel's hideout? A: Litefoot; Q: Who is the Doctor with? Summary: Leela follows Chang in order to find Greel's hideout while the Doctor and Litefoot set about finding her.