While Shax recovers from a near fatality, his shipmates have been busy. He's rather proud of them for taking the initiative and finding them a lucrative cargo run. His pride turns to outright horror, though, when he finds out what sort of cargo. Frogs. The one thing in the universe that incites mindless panic in Shax. Unfortunately, he also soon discovers that a healthy fear of frogs doesn't prevent frog-driven disasters.
An unlikely series of overlapping mishaps hurls the Brimstone back to an even more unlikely point in history for a couple of demons and a fallen angel in a spaceship. Somehow they need to repair and refuel, and puzzle out how to get home. Time travel has never been so messy.