Twilight goes for a walk on her own, but is ambushed by the Dazzlings who place a fourth pendant around her neck. The pendants magic turns her into a siren, but there is a backfire for the Dazzlings that they didn't see coming.

Takes place before the battle of the bands.

When Sunset Shimmer told Twilight and her friends that she had been erased from their memories, they didn't believe her. While magic was now something the girls were familiar with, removing someone from their memories just was flat out impossible... wasn't it? They all told off the bully and went back to their time together enjoying the beach. Except now, Twilight can't shake that something is seriously wrong.