Mexico City, November 1901. The police raid a private home where a secret party is being held. Among those attending is the son-in-law of President Porfirio Díaz.
Diego de la Vega returns to California to avenge his father's murder. After assuming the title of Zorro, he confronts the Governor, the malevolent leader of the Chinese community and a secret society, placing the common good above all.
When a young boy arrives in a small Mexican village, a profound friendship blossoms with a local kid — and a dark secret seals their bond forever.