In a world where supervillains are commonplace, two estranged childhood best friends reunite after one devises a treatment that gives them powers to protect their city.

On a mission to make Christmas unforgettable for Quill, the Guardians head to Earth in search of the perfect present.

Peter Quill, still reeling from the loss of Gamora, must rally his team around him to defend the universe along with protecting one of their own. A mission that, if…