Hawkeye's back in a bad way. Armed and dangerous, Clint Barton is tasked with his most perilous mission yet. And what he discovers will reverberate across the entire Ultimate Universe when finds himself in the middle of an international arms race. But on the brink of obtaining a serum that will change the course of mutant history, has the eagle-eyed hero aimed too high to succeed? Collecting ULTIMATE COMICS HAWKEYE #1-4.