In the teaser, the four lead characters in "Daredevil," "Jessica Jones," "Luke Cage" and "Iron Fist" assemble for a war in New York.

"The Defenders" is set a few months after the events of the second season of "Daredevil," and will see the vigilantes Daredevil, Jessica Jones, Luke Cage, and Iron Fist team-up in New York City to fight a common enemy, The Hand.

The upcoming series stars Charlie Cox as Matt Murdock/Daredevil, Krysten Ritter as Jessica Jones, Mike Colter as Luke Cage and Finn Jones as Danny Rand/Iron Fist.

It also features Imone Missick as Misty Knight and Elodie Young as Elektra Natchios.

All episodes of the series will stream on Netflix on August 18, 2017.