‘Supergirl’ Races ‘The Flash’ on Crossover Poster (Photo)

‘Supergirl’ Races ‘The Flash’ on Crossover Poster (Photo)

“Supergirl” and “The Flash” are about to meet, and a new poster has been released to tease the rare cross-network crossover episode.

Grant Gustin visits from Central City (and The CW) to reprise Barry Allen, aka the speedster known as The Flash to team up with Melissa Benoist‘s Kara Zor-El, aka Supergirl, Superman’s cousin, in National City.

The episode is titled “Worlds Finest,” and features an alternative universe Flash showing up to help Supergirl battle villains Silver Banshee (Italia Ricci) and Livewire (Britt Morgan), in exchange for her help in finding a way to go home.

Also Read: Grant Gustin Shares First Look at 'Flash'-'Supergirl' Crossover (Photo)

The crossover episode will air Monday, March 28. “Supergirl” airs Mondays at 8 p.m. ET on CBS and “The Flash” airs Tuesdays at 8 p.m. ET on The CW.

See the full poster below.

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