Marvel VS DC : War To End All Worlds

The multiverse is a fragile concept. One mistake. One wrong move. And not only your world, but other worlds like your own will be in great peril.

Some of these worlds have heroes. People willing to fight evil and save their world. But not every world can be saved.

Six worlds. Each in tremendous trouble.
But why? What is happening that is causing these worlds to not only perish but combine?

Only time will tell.