The mundane routine of a typical hospital: surgeries, calls, reports, meetings, disgruntled patients... Only all the staff are dinosaurs from the Cretaceous period. They've all sworn the Hippocratosaurus Oath, and each has their own quirks: the ankylosaurus therapist is a whiner, the pterodactyl surgeon is a chatterbox, and the dromaeosaurus nurse bites. So what do you have to work with people like that? The head physician suffers. And if you're wondering where brilliant green and laxatives came from in the Mesozoic era, read on to the end—a dizzying journey through time awaits.