Gabai Granny is based on the bestseller Saga no Gabai Baachan (Gabai Granny from Saga), which is penned by comedian Shimada Yoshichi as he recounts his childhood memories of growing up under the care of his grandmother.

This is the story of a young boy, after being sent from Hiroshima to Saga (10 years after the second World War, in 1958) by his mom because of a lack of money, journeying to a faraway place, and living in conditions alien to him, definitely makes him miss home. Worse, he is not familiar with his grandmother and her ways too. But with his Gabai Granny, he will slowly discover with his growing pains, just how resourceful Granny is...