In the first half of the 1600's, France is at war with Spain. The cousin of the king of Spain, Isabella, is held captive in the French castle, and the Count of Seville is sent to France as a diplomat. While there, he is escorted by the Three Musketeers, who discover that he has secretly made a deal with Cardinal Richelieu to disclose Spanish military secrets in exchange for Isabella's release. However, he is merely bluffing and plans to take Isabella by force. When the musketeers discover this, they come to his aid, and together the four of them work at freeing the Countess. Meanwhile, the Count doubles as Zorro to free the Spanish court from a treacherous suitor.
Gordon Scott
as Zorro
José Greci
as Isabella
Giacomo Rossi Stuart
as Athos
Livio Lorenzon
as Porthos
Roberto Risso
as Aramis
Franco Fantasia
as Count of Sevilla
Nazzareno Zamperla
as D'Artagnan
Nerio Bernardi
as Cardinal Richelieu
Ignazio Leone
as Sancho
Mario Pisu
as Count of Tequel
