Collects Champions (2016) #13-18, Avengers (2017) #672-674. Worlds
collide as the Champions come face-to-face with the Avengers! The
countdown for a clash of generations begins when the twisted High
Evolutionary sets Earth on a catastrophic collision course with its
opposite number: the unnatural Counter-Earth! Can the two teams put
their turbulent history aside to meet this planetary threat? Assuming
they can find a way to work together, can even this awesome assemblage
of heroes save two entire planets from destruction? Our young squad
might not all make it out of this in one piece, which can mean only one
thing: It's time for a membership drive!