Since the very beginning of Marvel and Netflix’s announced series of superhero show, we’ve been waiting for this: the team-up of Daredevil (Matthew Murdock), Jessica Jones (Krysten Ritter), Luke Cage (Mike Colter) and Iron Fist (Finn Jones) for an epic eight-part series featuring “The Defenders.”

The trailer, released this morning, is packed full with the fan service-y moments you might hope for from the four-series crossover, including Matt Murdock offering Jessica his legal services and Danny Rand showing off his glowy fist. Much like the comics from which this series is drawn, all these characters live in the same city, and it’s delightful to see them interact not just with each other, but with the supporting characters in their lives.

Thanks to narration by Stick (Scott Glenn) we know that the reason drawing together these four very different heroes has massive stakes for the fate of New York City…...