Shy Korean boy meets pretty Korean girl when they share an umbrella in the rain. They finally get together only to have the boy leaving for military service. She's on her way to see him off when she's killed by a bus.

Skip ahead a few years and the boy is now a man teaching in a high school. He becomes convinced that his love has been reincarnated into the body of a 17 year old boy that is his student. What are they to do?