When 25-year-old Lauren learns that her dog and best friend Gizelle is going to die from the tumour in her leg, she resolves to spend their last months together on a never-to-be-forgotten bucket list adventure. They will eat the finest steak, play in the ocean, ride a canoe, stop for ice cream, take naps during the day, and just spend time cuddling. They will make it the best time of their lives.
Gizelle has meant everything to Lauren - through her difficult growing up years, in her first serious relationship, and when she left Tennessee to move to New York. She has been her enormous, pavement-hogging, snuffly best friend. The dog that was non-negotiable in her life and relationships. And the dog - she now realises - who's taught her everything.
Their last months together teach Lauren the importance of living in the present, being able to face your fears as well as follow your heart. The best lessons she could ever learn for her life ahead.