Two anonymous, identically-clad spies engage in a perpetual, escalating war of sabotage and counter-sabotage. The narrative framework is entirely visual, with Prohias's wordless comic strips detailing the absurd and often fatal lengths each spy will go to in order to outwit the other. Their objectives are simple: to defeat their rival and achieve some mundane goal, like obtaining a piece of cake or crossing a bridge. The primary forces opposing them are each other, and the increasingly elaborate, Rube Goldberg-esque contraptions they devise. The world is a stark, black-and-white landscape where logic bends to the demands of slapstick violence and ingenious, yet ultimately self-defeating, traps.

Spy Vs Spy Masters of Mayhem is celebrated for its unique brand of visual humor and its sharp, wordless satire. Readers consistently praise Antonio Prohias's artistic skill and his ability to convey complex, hilarious scenarios without a single word. The book is often highlighted as a masterclass in comic strip storytelling, capturing a timeless absurdity that resonates with audiences. Its enduring appeal lies in the sheer inventiveness of the spies' escalating conflicts and the dark humor underlying their perpetual war.