Last month, it was confirmed that CBS' new hit DC Comics superhero seriesSupergirlwill be crossing over with The CW’sThe Flashin a specialepisodeset to air Monday, March 28. Since then, we’ve gotten our first look atGrant Gustin’s Barry Allen in photos from the set. Today, we have the first official poster and plot details from this episode, entitledWorld’s Finest.CBSgave the following official synopsis, which arrives with a one-sheet that is a parody of the iconic Superman #199 cover from DC Comics.

Hold onto your capes and dust off your running shoes because we’ve got new intel on the epicSupergirl/The Flashcrossover, which airs Monday, March 28 on CBS. In the episode entitledWorld’s Finest,Supergirljoins forces with a lightning-fast-and super dreamy-hero, The Flash (Grant Gustin), to take out two villains. Lost and confused after spiraling from his universe and landing in Kara’s,The Flashasks for her help in finding his way back home.

Flash Supergirl Crossover Episode Poster

Excited to finally come face-to-face with one of the good guys, Kara agrees on one condition: The super-runner has to help her take down her ultra-competitive co-worker and screeching malefactor Siobhan, aka Silver Banshee, and Supergirl’s old nemesis, Livewire. Packed with action, excitement, and a bit of super-flirting, this is an episode you do not want to miss.Italia Riccireturns asSilver BansheealongsideBrit MorganasLivewire.

This episode will also feature recurringSupergirlstarsJenna Dewan-Tatumas Lucy Lane,Chris Vanceas Non and Christopher Showerman as Tor. Ever sinceSupergirlwas picked up by CBS, fans had wondered if it was possible for this series to cross over withGreg BerlantiandAndrew Kreisberg’s showsArrowandThe Flashon The CW. While they do air on different networks, both CBS and Warner Bros. Entertainment actually own The CW, with the network’s name a combination of the first letters of its parent companies.

Flash Supergirl Crossover Episode Poster

SupergirlstarsMelissa Benoist,Mehcad Brooks,Chyler LeighandJeremy Jordan, withDavid HarewoodandCalista Flockhart. The series is produced by Berlanti Productions in association with Warner Bros. Television.Greg Berlanti, Ali Adler,Andrew Kreisbergand Sarah Schechter are the executive producers ofSupergirl, based on the characters appearing inDC Comics, and created byJerry SiegelandJoe Shuster, by special arrangement with theJerry SiegelFamily. Take a look at the poster to get ready for this epic crossover event at the end of this month.