When a certain plague hits our chosen legend Frisk Dreemur, even with her pony and human friends, this may be a battle that she's unable to win.

There is no doubt that, in their past adventures, our little team of legends has grown tremendously. Not only did Frisk and Twilight become closer than ever, but they met a lot of friends along the way of their conquests. No matter the challenge, no matter how their friendship was tested, they always achieved victory.

However, a certain magic hits our faithful heroine. She has changed. Not only did she become hostile- even to her best friends, but she has transformed from the legend of mercy into a genocide killer. Her friends are getting more and more suspicious, but Twilight refuses to believe what her friends are doing is right.

With the bond of our legends hanging on the edge... Will harmony be stopped once and for all?