The Big Three of the Avengers are reunited at last! And just in time to save the world from total annihilation at the hands of their most powerful enemies yet: the 2000-ft-tall space gods known as Celestials. Behold the coming of the Final Host! Collecting Avengers (2017) #1-6, Free Comic Book Day 2018 (Avengers/Captain America) 1 (Avengers story).