Sunset Shimmer had thought her life was turned around. She had her friends who supported her, and she never felt like home. However that all changed when a mysterious user on MyStable by the name of Anon-A-Miss started to appear online, posting everyone's secrets. Everyone starts to blame Sunset and quickly resort to bullying to remind her how she was back in her "reign of terror". The worst part? Even her friends don't believe her.
Meanwhile A new student who just arrived in Canterlot High. Someone who isn't from Crystal Prep, but out of state. He soon learns about the whole Anon-A-Miss Chaos, but unlike the others he believes Sunset when she says she's innocent.