Si-eun is the new teacher at a nursery school. She is immediately alarmed by the aggressively tactile behaviour of one of the little boys towards Seolha, a little girl. Si-eun’s self-control is destabilised by the echoes of a personal trauma, the nature of which is obscure and lingers menacingly. Her concerns about inappropriate behaviour are met with hostility from her colleagues, who uphold a strict and conspiratorial silence. Boundaries are overstepped as situations escalate and Si-eun’s secret threatens to reveal itself.