Mugen's father is dead, but now without leaving him one last painful surprise: he had powers just like Mugen! But before Mugen reveals more about his past, our heroes are forced back onto the case. Snoof and Savage expect answers, but they've got a lot on their plates, professionally and personally. The Hero Academy caper could reach the highest echelons of power in Lithium City, but can our heroes close the case--and survive the trip home?