Wanda and Pietro Maximoff have been mighty heroes, Avengers…and sometimes even villains. But above all, they are twins who will look out for each other, no matter what. So when Wanda receives a letter from their recently deceased father figure, Magneto, that she knows would upset Pietro, she burns the letter before her brother can read it. She may have the best intentions, but you know where that leads…and her fateful decision will drive the Scarlet Witch and Quicksilver apart at the worst possible time. Because a new threat heralded by the Wizard — with a horrifying eldritch upgrade — is coming for their heads, and if they can’t find a way to repair their damaged bond, it will cost them their lives! Can even these powerful siblings withstand the Wizard’s Frightful Four Hundred?!