
They take the Avengers from a gathering of almost all members before throwing them into an alternate reality, through a confrontation with the Squadron Supreme, and concluding with a celebratory story of Avengers Day. These had previously been collected in The Morgan Conquest, Supreme Justice and Clear and Present Dangers.

One collects the regular series created to feature the same team of Avengers as seen in the 2012 movie the other, earlier, material is a collection of Kurt Busiek’s Avengers, with this volume collecting the first year, from 1998, when Busiek was teamed with fan favourite Avengers artist George Pérez.

Confusingly, there are two graphic novel series titled Avengers Assemble.
