Supergirl dropped a Cadmus-load of DC goodness by Monday’s “Manhunter,” but then came The Flash speeding along for our first official footage of next week’s “Worlds Finest” crossover! Wouldn’t you know it, those crazy kids are every bit as adorable in action as the photos would suggest.

CBS debuted the first official promo for next week’s “Worlds Finest” teaser with the close of Monday’s Martian-centric “Manhunter,” just moments after Italia Ricci’s Siobhan Smythe seemed to develop her first Silver Banshee scream. Of course, Cat is none-too-impressed with The Flash as National City seems to be, while Barry and Kara’s playful rivalry may give you heart palpitations.

So reads the official March 28 synopsis, which explains the villainous teamup we glimpsed on set earlier:

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.

We’ll find out more on the road to March 28, so stay tuned for more “Worlds Finest” details of the big Supergirl-Flash crossover!

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