The Tythonian ambassador, Erato, was piloting a Tythonian ship when he travelled to Chloris. There he was imprisoned, separating him from the ship. His captor, Lady Adrasta, took an interest in finding out the ship's origin and purpose. She went so far as to execute one of her men who had failed to deduce what it was. The Fourth Doctor suggested that it was an egg, but then fled from Adrasta who turned to Romana for answers.