Undoubtedly one of the most interesting of the big summer flicks is the upcoming Cowboys & Aliens, which sees Iron Man director Jon Favreau taking on the western-meets-sci-fi comic book, with Daniel Craig, Harrison Ford, Olivia Wilde and Sam Rockwell starring. Now a new trailer, with plenty of the never-before-seen footage, has arrived, which makes this even more of a must-see than it was before. The movie is about a man with no memory (Craig), who stumbles into a wild west town, only to discovers that the people of Absolution don’t welcome strangers, and nobody makes a move on its streets unless ordered to do so by the iron-fisted Colonel Dolarhyde (Ford). However Absolution is about to experience fear it can scarcely comprehend as the desolate city is attacked by alien marauders from the sky. Now, the stranger they rejected is their only hope for salvation. The trailer was first shown during Spike TV’s Guy’s Choice Awards in the US, but click below to take a look. The film hits cinemas on August 19th.