In the last book, the Resistance defeated the Dark Legion and their leader, Tabuu...but the Dark Legion isn't finished yet. Tabuu was working under the orders of someone else, something even more sinister.. The next book in the thrilling Super Smash Bros. Ultimate trilogy, will the heroes of the Smash universe, along with the help of the ex-Dark Legion, be able to defeat this new foe? Or will they fall victim to his plan to destroy the Resistance forever? And, a shock that will have you on the edge of your seat!

The world has long moved on since the defeat of Master Hand and Crazy Hand. However, a new evil has risen.....Tabuu, a man made of energy. Since then, he has gathered all the villains in the Smash world and set them against the heroes. Since then, our heroes have struggled to survive and restore their world. And there is already evidence of a traitor in their midst.....