In 1849, Thomas Choi Yang-eob is ordered to gather historical information on the martyr, Catholic Father Kim Dae-gun, as well as to help Dae-gun's mother and sister. Yang-eob returns to Korea and remembers the past. At fifteen, Kim Dae-gun, Choi Yang-eob, and Choi Bang-jae were faced with all sorts of hardships but they still managed to study theology at Macao. The three return...