With more than 19,000 clients, Dr. Pol is stretched to the limit. To keep up with calls, he adds Dr. Sandra to the staff. A farm girl at heart with lots of large animal experience, Dr. Sandra treats a downed horse with lesions that make it nearly impossible to stand and nurse her colt. Elsewhere, Dr. Brenda is called to treat a bloated cow in critical condition. Without treatment the cow will die, but with one simple procedure, she miraculously has him off the ground and eating in minutes.

We revisit Dr. Pol and his son Charles as they must solve a mystery -- 10 Angus steers have suddenly gone lame and are struggling to stand. A steer's kick can be lethal, and to treat the sick cattle Dr. Pol will have to stand directly in harm's way. Back at the clinic, we see a recent widow who is prepared to pay whatever it costs to save her late husband's dog after the pet swallowed a rock. The sweltering heat isn't the only thing causing Dr. Pol to sweat; he's preparing for a family reunion.