A stressed out Eurasian lynx is brought in for over-grooming and not eating. Dr. Thielen sees two emergency cases including a ball python that was brutally attacked by a feeder rat, and a rescued cockatiel that is in distress, trying to lay an egg.

A hedgehog attacked by a dog is brought into the clinic with a broken leg. A 9-year-old chinchilla presenting with diarrhea becomes a life or death emergency.

Dr. K and her team are preparing for surgery on a sulcata tortoise who has a mass on his neck. Dr. Thielen takes on a mystery case involving a therapy chicken with a lame leg. The diagnosis leaves the owner faced with a heart-wrenching decision.

A black swan is rushed into the clinic after being run over by a car, while a sick pot-bellied pig undergoes surgery to remove a foreign object from her bloated stomach.

Tension is high as many critical patients visit the clinic. First, two sugar gliders are rushed in to receive treatment after getting tangled in a blanket and fighting their way out. Dr. Thielen checks out a newly-adopted cockatiel that flew into a flytrap and has sticky material all over its feathers. Finally, a long-time bunny patient has an obstruction in her stomach that needs to be removed immediately.

Dr. K's day kicks off with an emergency when a bleeding cockatiel comes into the clinic. Dr. Thielen sees three animals in one appointment, including a skunk that needs to be spayed and two chameleons getting wellness checks. Then Dr. K must manage the care and quality of life of an aging ferret. Dr. Thielen tries to relieve a gerbil of an abscess, while Dr. K cleans a mouth wound on a boa constrictor so unpleasant it affects the entire clinic.

It is sink or swim as Dr. K tries to solve mobility issues for two goldfish. A macaw is brought in with a serious bite wound to the foot, caused by a bigger bird. A rabbit presents with a large amount of fluid in the abdomen, and the exploratory surgery reveals a shocking result. And Dr. K treats a tiny yellow-bellied slider that may have pneumonia, while Dr. Thielen treats a ferret with a large tumor on her tail.

It's a race against time as Dr. K treats a pet goat that must undergo two surgeries for kidney stones. Meanwhile, a baby macaw comes in with a genetic bone disorder that makes it unable to stand, and Dr. K decides to perform a risky orthopedic surgery to reform the bones. And Dr. K performs an unusual procedure for a guinea pig's eye injury.