What Happened To Grandpa is a heartwarming picture book that shows us the story of our little protagonist Neha and his Grandpa. Grandpa is old and not able to keep up with things, and his family seems to be losing him. But Neha is the one who reminds them of all her Grandpa is. In this tale of love and loss, would she be able to remember and celebrate her Grandpa? Read the review to know more.