Agents West and Gordon are notified by another agent about an assassination plot against President Juarez of Mexico. Later, they find the agent dead with a knife in his back through a flyer for the Echo Amusement Park. When West arrives at the deserted amusement park, he meets Count Manzeppi, master of trickery and corruption. Manzeppi captures West and force him to help kill the Mexican President. First, he must kill his partner and best friend, Artemus Gordon.