Young-oak, a high school sophomore trapped in a feminine name, endures relentless teasing and grows resentful of his mother, Jeong-soon, whose sudden dissociative episodes leave him ashamed. While he drifts into violent rivalries at school, Jeong-soon begins therapy to confront the blank space of her childhood. On bright, windy days, fragments of memory return, leading her back to the suppressed trauma of the Jeju April 3rd Uprising. As mother and son struggle with identity, shame, and buried wounds, their lives intertwine with a history still demanding remembrance.