Babel-17 delves into the power of language in a universe where humanity is embroiled in a cosmic war with the Invaders. These adversaries have been covertly assassinating officials and sabotaging spaceships. The only clues are strange alien messages intercepted in space. Poet and linguist Rydra Wong is determined to decipher this cryptic language and halt the alien threat.

As Rydra embarks on this mission, she discovers that the language, Babel-17, is more than just a code; it's a weapon that can alter perception and thought, turning those who understand it into unwilling traitors.