Syd's dad is about to 60 years old and is not happy about it. Jim is mad that people are taking over a former vet's practice leading Jim to wonder about closing his practice. Robbie is still trying to figure out how to repay Heather. Jim's accountant advises him to sell his practice because the accountant feels Jim should retire. Jim gets ready to shut down his practice. Syd and Joanie read the fax and learn he could retire (Syd was waiting for a fax and stumbled on the fax for her dad.)
In this season's opener, an out-of-control Mercedes smashes through a wall of the clinic; Molly, a mentally disturbed and dellusional young woman, holds Syd (Melina Kanakaredes) at gunpoint because she thinks she kidnapped her baby; and Helen contemplates a new career, away from the clinic. Meanwhile, Joanie hires Doug Dog Boy Boyce to help her out at the Barkery.