A worried young couple make a mercy dash to the clinic with a Wallaroo who is suffering from diarrhoea and severe dehydration. The couple rescued Heidi after her mum was hit by a car and have been caring for her ever since. After examining Heidi, Dr Chris concludes that she is 180 days old (6 months) and that bacteria are attacking her system. Meanwhile, over at Bondi's referral hospital SASH - one year old Dalmatian puppy Hugo is in serious trouble. He has something stuck in his bowel, which later is identified as a corn cob. How will Dr Lisa remove this cob? Also, John and Fiona travel over three hours to see Dr Chris in the hope that he can help their Shar-Pei dog - Mr Wilson. Poor Mr Wilson is slowly going blind. His skin folds over his eyes are so loose that his eyelashes are sitting on his eyeballs. Dr Chris proposes a drastic measure - some plastic surgery. But how will this spoilt Shar-Pei survive being separated from his owners for the first time in his life?