Guardians of the Galaxy Vol. 3's Main Plot Was Almost Used for a Rocket and Groot Movie
Before James Gunn directed the first Guardians of the Galaxy movie, he already had the plot for Guardians of the Galaxy Vol. 3 in his head. Now, to be fair, he didn't know there would be a third film at the time; back then, he didn't even know if the first film would work. But before he ever shot a second of the 2014...