Upon hearing of the presence of Edward Elric, the Full Metal Alchemist and wrongly perceiving a threat; Father Cornello authorizes for them to be removed. The priest is later shown to be talking to Lust, though nothing is explained.

Edward meanwhile tries to convince Rosé of the priests scam and tries to force his views on alchemy and science and disbelief in miracles upon her. Just then Cray, a follower of Father Cornello shoots Al with a gun and the suit of armor is revealed to be hollow, showing that Al has no body, which Al terms as his "punishment for setting foot on holy ground where mortals are forbidden."

Rosé believes them to be evil and runs off in panic leading them to Father Cornello. There, Edward realizes that the priest has a Philosophers Stone and hence he performs alchemy without a transmutation circle and ignores the laws of equivalent exchange. A dialogue takes place where the priest tries to show he has done nothing but good for Reole and that Edward only wants the stone for personal reasons. The priest sets a transmuted Chimera to attack them and turns the ground into sand sweeping Al away and preventing Ed from drawing a transmutation circle. This is where Ed reveals that he can perform alchemy without a transmutation circle to create a spear, forcing Cornello to transmute the bird on his shoulder into a larger bird to join the fight. As the fight drags on, it is revealed that Ed's right arm and left leg are mechanical as it helps him survive the attacks on those areas by the Chimera and Giant Bird and then he quickly defeats both of them. The priest correctly guesses that the brothers attempted human transmutation, hence their appearance.