Collects Deadpool (2012-2015 3rd Series) #20-25. Cover by Mark Brooks. S.H.I.E.L.D. makes a grievous tactical error when they stiff Deadpool on a bill, and you can bet that they're going to regret it! Deadpool declares a one-man war on the world peacekeeping agency - but even as the maniacal merc pursues his revenge, S.H.I.E.L.D. discovers someone has been betraying them...and it seems to be Agent Preston! Deadpool takes his fight to the Helicarrier, intent on getting his money one way or the other - and comes face-to-face with Agent Phil Coulson! You know, the guy from the hit TV show MARVEL'S AGENTS OF S.H.I.E.L.D.! How cool is this going to be?! Plus: it's another trip back to Deadpool's storied past as the Merc with a Mouth wreaks havoc on a cosmic level!