Travis is informed by Doctor Cyril Morgan, the successor to Phlox (mirror), that the fetus has a hole in his heart. This will require intrauterine surgery. However, the doctor gives Travis a choice - let the fetus (who Hoshi wishes to name Izo) live, or allow Hoshi to die on the operating table, thereby assassinating a tyrant.
Mayweather is tempted with the prospect of becoming Emperor, but he realizes what a burden it would be, and that he would be in fear for his life all the time. He further begins to understand that he would rather become a father, and so he consents to the surgery to repair the fetus's heart and allow them both a chance at survival.