Relying on a love triangle to prevent the end of eternity? Well, that's just crazy. But Fate had to take the chance because betting on the improbable was all that was left. And in the process, the hand-picked trio discovers that preserving forevermore can turn someone's soul inside out. Literally.
The Sirens of Titan by Kurt Vonnegut
The Hitchhiker's Guide to the Galaxy by Douglas Adams
Secondhand Souls by Christopher Moore