It's the peak of summer in middle Michigan and babies are everywhere as Dr. Pol, his son Charles and Dr. Brenda try to keep up with an onslaught puppies, kittens and calves, oh my! Amidst the birthing chaos, a couple of the Pol familys animals go under the knife; including a duck named Mr. Quackerson, who is found injured and needs to be ambulanced to the clinic for surgery. Then, Charles's Great Dane puppy Athena has come of age and is in for a fix. But will a routine procedure give Dr. Pol more than he can handle?