The person who stood in front of him when he was a child, now meets again, and what he thought was a chance encounter was actually part of his plan. The good times didn't last long, and the two of them left school and rushed to their own futures. He asked her to wait for him for three years. Will things change after three years, or will they reunite after a long separation?
Concept: Although youth has an expiration date, love has no expiration date.