Ep 57. Eternal Leave

At the start of Fullmetal Alchemist: Brotherhood season 1 episode 57 - Eternal Leave, the viewers are taken to a forest where Roy, Hawkeye, and a group of soldiers are trying to find Scar and Dr. Marcoh who have been missing for a few days. They come across a cabin where they find Scar and Dr. Marcoh, who is badly injured. Dr. Marcoh tells them about the Philosopher's Stone and how it has been created by sacrificing human lives. Scar and Dr. Marcoh mention that they need to stop the homunculus from acquiring it.

At the same time, Ed and Al are in Resembool where they reunite with their childhood friend, Winry and Granny Pinako. Ed and Al tell them about their ongoing mission to find a way to restore their bodies, and Winry agrees to come with them to help maintain their automail as they continue their journey. They also learn that the military is looking for Scar, and they come up with a plan to distract them while Scar and Dr. Marcoh head to a specific location.

As the episode progresses, we see that Scar and Dr. Marcoh have made it to a mining town called Youswell, where they meet the Ishvalan refugees who are being manipulated by the homunculus. Scar and Dr. Marcoh try to convince the refugees to leave and find a better place to live, but the homunculus shows up and manipulates the Ishvalans into attacking Scar and Dr. Marcoh. The military also makes an appearance, but with the help of Ed, Al, Winry, and Mustang's team, Scar and Dr. Marcoh are able to escape.

In the final scene of the episode, we see that the homunculus has located the Philosopher's Stone, and Scar and Dr. Marcoh are on a mission to stop it from being used for evil purposes. The viewers are left on a cliffhanger wondering what will happen next.

Overall, Fullmetal Alchemist: Brotherhood season 1 episode 57 - Eternal Leave is an action-packed episode with some interesting plot developments. Some of the key highlights of the episode include Scar's attempts to atone for his past and Dr. Marcoh's realization of the true nature of the Philosopher's Stone. The episode also touches upon the theme of sacrifice, with the viewers seeing the consequences of creating the Philosopher's Stone using human lives. With some exciting cliffhangers, the episode sets the stage for some thrilling episodes in the future.