Leaving Mundania explores the colorful lives of "cosplayers" by delving beyond the common stereotypes of anime enthusiasts who express their fandom through costuming and roleplay. This film follows several cosplayers from the Greater Toronto Area as they prepare for their annual pilgrimage to Anime North, the largest anime fan convention in Canada. Through candid footage and in-depth interviews, Leaving Mundania offers an intimate view of participatory fan culture, revealing how cosplayers stand apart from the "mundanes" of the everyday world.