It's a day of mystery at Dr. K's clinic when Crystal, a bearded dragon suffers a mysterious illness, Willie Nelson, a sweet prairie dog has an unexpected reaction to surgery and Leo a sulcata tortoise is run over by a car. Meanwhile, Cleo, a swan with a drooping wing worries Dr. T.

A small ferret named Maximus has a big problem, and the team works to help the little creature with a large lump on his face. And Dr. K works to help Daisy, a baby bunny with an injured foot takes an unexpected turn. It's a busy day in the clinic as the team also works to help a feather-plucking cockatoo with an attitude, and a yellow-bellied slider turtle that needs emergency surgery.

Mimi, a red-footed tortoise, can't walk, so Dr. T gets creative building a tortoise sized skateboard to get him back on his feet. And the team works to help Oinkus, a two-year-old potbellied pig with a problem that is hard to swallow. Meanwhile, Dr. K is concerned when a three-year-old rabbit arrives displaying unsteady behavior after getting her head stuck in a cage.