The busy summer season kicks into high gear at the clinic as life and death situations come streaming in testing the endurance of all the vets at Pol Veterinary Services. Meanwhile Charles takes his commitment to getting in shape to the next level and signs up for a 5K race around Mt. Pleasant. Between biking, canoeing and even hitting the gym during lunch in preparation, Charles still manages to make time for emergency farm calls with Dr. Pol. A mare at a local Amish farm has been in labor for almost 48 hours. It doesn't look good for the foal, but Dr. Pol and Charles waste no time trying to save the mares life. Back at the clinic, Dr. Sandra is out in the parking lot, examining a goat that birthed a kid last night. Its concerned owners suspect there may still be another baby inside. Finally, as race day approaches, a farm call leaves Charles with an 11th hour injury that may destroy all of his training efforts and possibly leave him unable to compete.