"Every village has it's fool", this is basically what happens in a Miracle of the giving fool (BA:BO), Seung-ryong at a young age suffers an accident with his father. His father get killed but he survives with some cerebral injuries. At age 27 he has the intelligence of a six-year-old child. Some years after the accident, his mother dies and he sees himself alone in the world with her younger sister Jee-nin, read morewho simply sees her brother as something disgusting and hateful. The movie begins with Seung-ryong waiting for something, or someone who finally arrives, after some years. She's Ji-ho, a childhoods Seung-ryong love. He makes his living selling the most famous toasts in his village in front of his sister school, that way being able to "keep an eye on her".
Resuming, it's a romance, a story that tells us how strong and deep all kinds of love can be.