The Doctor visits Tenochtitlan to see an old friend, a merchant named Tochtli, who is really a spy for the Aztec empire. Tochtli is wary of the Doctor, wondering if he will have to kill him. As they walk through the market, they are accosted by several young warriors, but the Doctor stares them down. Before he leaves, he tells Tochtli that he is braver than the warriors, because he risks his life for little credit or glory.