CBS unveils 'Supergirl' and 'The Flash' crossover poster and plot details

CBS has revealed the poster and plot synopsis for the upcoming crossover between Supergirl and the CW’s The Flash.

As previously reported, CBS confirmed there would be a crossover episode between the two shows in Feb. The episode is set to air Monday, March 28 where The Flash star Grant Gustin will take on his role as Barry Allen/The Flash for the Supergirl episode.

The crossover had been a rumor since Nov. but Greg Berlanti shut down the rumors for the time being.

Titled “Worlds Finest,” the episode will show Supergirl helping Flash after he spirals into her universe, where he asks for assistance in getting home. Kara will help him as long as he helps her take down Silver Banshee and Livewire in National City.

In the poster, you can see the two superheroes in their signature running poses with the tagline “Who is the fastest person alive? Read ‘The race between Supergirl & The Flash.”

Kara gains a new ally when #TheFlash crosses over to Supergirl on Monday, March 28 at 8/7c on CBS!

Posted by The Flash on Wednesday, March 9, 2016

Melissa Benoist, who plays Supergirl, appeared on Glee, which Gustin also appeared in. This will be the first time they have actually worked together on screen.

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