Fanboy is a heartfelt and humorous mockumentary that follows Mateo De Cola, a 40-year-old AS Roma superfan from Toronto, as he embarks on a once-in-a-lifetime journey to experience his first live derby in Rome. Living in his childhood home with his elderly mother, Mateo's life revolves around Serie A soccer, where the highs and lows of his beloved Roma define his every move.

Through Mateo's eyes, Fanboy delves into the vibrant, intense world of Italian ultras, revealing their traditions, rivalries, and unyielding loyalty. As Mateo navigates this chaotic subculture, the film also examines how European football's passionate culture resonates with Canadian fans, blending humor, emotion, and cultural discovery to celebrate the beautiful game.