Harbinger Wars, Valiant's first crossover event, begins here! Two dozen undisciplined, untested, and untrained superhuman children have just escaped from a top-secret research facility and into the world. When Bloodshot, Toyo Harada, and Peter Stanchek join the chase, will the Valiant Universe be ready for its first all-out superhuman showdown? Collecting Harbinger Wars #1-4 by acclaimed writers Joshua Dysart (Harbinger) & Duane Swierczynski (Bloodshot) and artist Clayton Henry (Archer & Armstrong), start reading here for a high-stakes tale that will put Valiant's greatest heroes to the ultimate test!