Peter Parker ditches a high school field trip to stow away on a spaceship; he is moved more than he wants to admit when Tony Stark officially makes him an Avenger by off-handedly knighting him during a dangerous trip halfway across the galaxy; he trades pop-culture wisecracks with Star-Lord; he gets in a fight with somebody vastly more powerful than him but holds his own; and he delivers one of the movie’s most poignant lines (“Please, sir, I don’t want to go”—dialogue improvised by Holland) before he dematerializes in Stark’s arms.
