(Jamie attempts to stop Ben leaving.) Bring him in. MEDOK: It's the Macra, Ola! That is an order! VOICE OF CONTROL: The Doctor and his friends are to be given the advantage of high powered adaption at once.
Plan: A: The Doctor; Q: Who is unable to convince the colonists that the Macra exist? A: his companions results; Q: Who does the Doctor try to brainwash? A: his friends; Q: Who does Ben betray? Summary: The Doctor is unable to convince the colonists that the Macra exist and an attempt to brainwash his companions results in Ben betraying his friends.