The much-anticipated crossover in the Arrowverse is almost here and CW is teasing the event.

In a newly released trailer for “Crisis On Infinite Earths”, which will take place across “Supergirl”, “Batwoman”, “The Flash”, “Arrow” and “DC’s Legends Of Tomorrow”, fans get a glimpse of the destruction of Earth-73.

“This threat brings the annihilation of all life,” the Monitor says.

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“Every second another Earth dies,” Barry tells Earth-90’s Flash.

Things are complicated but with this many superheroes teaming up together, they are sure to find a solution.

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“Crisis” starts on with “Supergirl” on Dec. 8, then “Batwoman” on Dec. 9 followed by “The Flash” on Dec. 10. A winter hiatus will take place before picking up again on Jan. 14 with “Arrow” followed directly after with “Legends Of Tomorrow”.