As suspected this story deals with the Purple man a.k.a. Killgrave. If you have seen the Netflix series Jessica Jones then you know that Killgrave has the ability to mind control people due to a pheromone that he emits from his skin. This makes him very very dangerous.
Well apparently the Purple Man has children that he bred for his own power. They kind of amplify his abilities. The kids search out Daredevil for help against their dad and lead him to Killgrave's hideout. This doesn't go as planned and Daredevil is mind controlled by Killgrave by the end.
A decent issue. I love the Purple Man so I will definitley be sticking with this book.