Here’s our first look at the intra-network crossover episode blending Supergirl and The Flash — just don’t blink or you might miss it. This 10-second promo teases the DC Comics alliance of the CBS superhero (Melissa Benoist) and the CW’s speedster (Grant Gusten). Is it a case of meet-cute? Decide for yourself.

supergirl theflashHere’s how CBS lays out the plot of the link-up of the two Warner Bros TV-produced series: “Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan (Italia Ricci), aka Silver Banshee, and Livewire (Brit Morgan) in exchange for her help in finding a way to return him home.”

Titled “Worlds Finest,” the Nick Gomez-directed episode airs March 28 on CBS. It was written by Andrew Kreisberg and Michael Grassi from a story by Greg Berlanti.

The Flash was among 11 series renewed by the CW last week for the 2016-17 season, which will be its third, while Supergirl is awaiting news on its potential sophomore season.