Rebecca Rubin Film and Media Reporter “Guardians of the Galaxy Vol. 3,” the conclusion to Marvel’s trilogy about an intergalactic crew of misfits, kicked off with $114 million in its domestic box office debut. Those ticket sales rank as the second-biggest opening weekend of the year, behind “The Super Mario Bros. Movie” with $146 million. Despite the towering figure, the film ever-so-slightly missed expectations of $120 million and arrived considerably behind its predecessor, 2017’s “Guardians of the Galaxy Vol. 2” with $146 million. It’s a jump on the first “Guardians of the Galaxy,” which introduced the world to Chris Pratt’s Star Lord and his friends and opened to $94 million in 2014.