Grampa has been a great father. Homer and Grampa have been super close growing up. One day Grampa feels a sharp pain, it turns out both of his kidneys have failed. Homer, remembering all of their days together, courageously offer Grampa a kidney. After the surgery, Grampa is feeling stupendous, but Homer is having some complications. Things get worse and Homer passes away. They family mourns him as they put Homer in the ground on a rainy summer day. Grampa is devastated by the events, his only son saved his life but died in the process. No man wants to outlive his son.