By Natalie Abrams
November 06, 2017 at 10:15 PM EST

The CW’s upcoming four-way crossover is upon us — and we finally have a brief first look!

A quick promo for The Flash, Supergirl, Legends of Tomorrow, and Arrow crossover aired Monday.

As previously revealed, all of the heroes will gather in town to celebrate Barry and Iris’ wedding, but villains from Earth-X crash the festivities with a deadly agenda.

UPDATE: Another brief trailer was released on Monday:

The four-part crossover will air across two nights starting Monday, Nov. 27 at 8 p.m. ET, concluding Tuesday, Nov. 28 on The CW.