Ambien II eventually abandons the Sirian Experiments in the south when they are overrun by Shammat. The Five want her to abandon Rohanda altogether, but she has become too attached to the planet and is warming to Canopus and seeing the error of her (and Sirius's) ways. The Five question her ties to their former enemy, but when she tries to explain herself, they do not hear what she is saying, just as she initially could not hear what Canopus was saying. The Five then send her to Planet 13 on "corrective exile" to write a report on what has happened (this book). When she later releases the report, the Five issues a statement denying the authenticity of Ambien II's work.