Marvel release first look trailer for Avengers: Infinity War

It's the conclusion to the highest grossing film franchise of all time.

A new trailer gives superhero fans an early glimpse at the upcoming Avengers: Infinity War film.

The film will be the culmination of a series that started in 2008 with Iron Man and will see all the Marvel heroes come together to take on Thanos (Josh Brolin), the supervillain the series has been leading up to since Avengers Assemble in 2012.