August's favorite holiday was always Halloween. He loved Halloween because it was the one day a year when he could take the opportunity o be someone else, if only for one day. Auggie loved pretending that he was someone else, and when he was younger, he used to wear an astronaut helmet everywhere. This allowed him to hide what made other people stare at him and imagine that he was living a different life. He couldn't wear the astronaut helmet after an eye surgery, and then he lost it (or thinks he did), and he adjusted to life without it, but Halloween remained his favorite holiday.

That seems to change on the holiday he experiences at his new school. Auggie had planned on dressing up as Boba Fett for school and the Halloween parade, but when Halloween morning arrives, he is unable to put on his Boba Fett costume. It requires the help of an adult, and Auggie's dad is busy with Via. In the interest of time, Auggie chooses to wear his Bleeding Scream costume instead. He wears it to school, and nobody recognizes him. Unfortunately, Auggie overhears Jack making fun of him to Julian, because Jack has been expecting Auggie to come to school as Boba Fett.

He has no idea that it is Auggie under the Bleeding Scream costume. This very nearly ruins Auggie's Halloween. After school he is devastated and crying and has decided that he won't go to the Halloween parade. Via is able to soothe him and convince him to dress up as Boba Fett and go with her to the parade.