Cassidy came home from school one day to find her grandparents picking her up instead of her mom. Her parents then told her the bad news - her dog Josie had to be put to sleep due to lymphoma cancer. Josie was Cassidy's best friend and they had many good memories together over Josie's 10 years. Cassidy wishes she could have said goodbye to Josie and now realizes how much she loved and appreciated her dog. Cassidy now has a new puppy named Shadow that she hopes to train to be at least half as good as Josie.