Dan Slott presents the cosmic saga he's been waiting his entire Marvel Comics career to tell! Before the Kree, Skrull or Shi'ar empires...before the emergence of Galactus...before the birth of Asgard...there was the First War. Today, the greatest conflict to ever rage across the Multiverse is reignited. This...is the Day of Reckoning! And all that stands between all of reality and revenge from the dawn of time are the heroes of Earth - and the mind of Mister Fantastic! Starring the FF, She-Hulk, Jack of Hearts, the Unseen, the Silver Surfer, Thor and everyone in the whole dang Marvel Universe - but as oblivion approaches, will Doctor Doom be the hero all of reality needs? For the Multiverse to survive, the Watchers must all break their most sacred oath! Collecting FANTASTIC FOUR: RECKONING WAR ALPHA, FANTASTIC FOUR (2018) #40-46 and RECKONING WAR: TRIAL OF THE WATCHER.