Marvel films will bridge the gap between the "Avengers" films, with a live-action version of "Guardians of the Galaxy," according to a possibly leaked description of the film that appeared on the website The Grid. Run away if you do not want to read any potential spoilers.
According to this document the film's plot revolves around "a U.S. pilot who ends up in space in the middle of a universal conflict and goes on the run with futuristic ex-cons who have something everyone wants."
Marvel hasn't commented on this possibly leaked description of the film. So let the speculation and debating begin. For those who are unfamiliar with the Guardians of the Galaxy movie, Kevin Feige is working on the film version and the movie will revolves around the 2008 comic book version of the team. Nicole Perlman will write the movie.
The Guardians of the Galaxy are a fictional superhero team that was created by the Star-Lord after an alien invasion. The team of interstellar heroes was formed to be proactive in protecting the galaxy, rather than reacting to crises as they arise.
The team is composed of heroes Adam Warlock, Drax the Destroyer, Gamora, Phyla-Vell, Rocket Raccoon, and Groot, and Mantis in supporting roles.
The leaked description of the movie could have revealed a few major plot details about the movie and the Avenger's sequel. The pilot mentioned could be Ms. Marvel. Major Carol Danvers aka Ms. Marvel is a non-powered member of the United States Air Force and Security Chief of a restricted military base. It is very possible she could be act as a link to the next "Avengers" film.
Another possibility is that the U.S. Pilot is Peter Quill, better known as the aforementioned Star-Lord. In the comics, Quill is a NASA pilot with a troubled childhood. He was born during an unusual astronomical phenomenon when all of the planets aligned. His mother's husband believes she cheated and attempts to kill baby Peter, but the husband dies of a sudden heart attack. Quill eventually becomes an intergalactic cop.
The thing that everyone wants could be the Infinity Gauntlet, which was briefly seen in the first "Thor" film. In the comics, the villain Thanos mounts the six Infinity Gems, on his left glove to form the titular Infinity Gauntlet, each Gem grants its bearer complete mastery over one aspect of the multi-verse. Thanos of course made a cameo at the end of the first "Avengers" film.
Well this is all speculation in till more details are provided or this leak is proven to be false.