Fields of the Damned 2: Legacy (2015)

Some years have passed since a tragic zombie outbreak gripped the world. Now, an older Cage resides on a farm spending much time with his granddaughter, Kate. When Kate asks about the events that took place during the zombie apocalypse, the elder Cage begins the story of how he, Tank and Grit saved the world from the zombie outbreak using an antidote given to him by his father, a military-grade serum named LEGACY.