Inspired by true events, this musical comedy follows 19th-century paleontologists O.C. Marsh and Edward Drinker Cope, whose intense rivalry fueled a race to uncover fossils across the United States. Their competition led to significant scientific discoveries, but their personal animosity and relentless pursuit of recognition ultimately damaged both their careers and reputations.

The story reimagines their conflict in the afterlife, where a jury of dinosaurs is tasked with resolving the feud once and for all. As the two men revisit their achievements, mistakes, and grievances, the musical explores ambition, legacy, and the consequences of obsession through a comedic lens.