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Flash/Supergirl Crossover: Official Synopsis and Poster Revealed

The Flash and Supergirl

Today, the production teams behind the highly-anticipated Flash/Supergirl crossover released the official synopsis and poster for the episode.

Here’s the synopsis.

Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.

The poster below pays homage to the cover for the Superman #199 comic which was about a race between The Flash and Superman. (We don’t think Barry and Kara will actually race each other in the crossover episode. But if they do, our money’s on The Flash.)

The Flash/Supergirl crossover poster

The Flash/Supergirl crossover episode titled “World’s Finest” will air on Monday, March 28th at 8pm EST on CBS.SuperFable