One is All, All is One.Edward and Alphonse visit their master Izumi and her husband Sig seeking clues on the philosopher's stone. During their stay, the Elric brothers recall how they first met Izumi during a flooding in Resembool, and how they were formally accepted as Izumi's disciples after she stranded them on an island for a month as a test. They look back at how they figured out the meaning behind "one is all, all is one". Izumi realizes that the Elric brothers attempted human transmutation by their movements during hand-to-hand combat training. Realizing that they had attempted human transmutation Izumi tells the Elrics that she had also broke the taboo to bring back her baby who died during childbirth. The three make up, bonding over the hardships that they had suffered from their attempts at human transmutaton.