In the Tokyo suburbs four women work the draining graveyard shift at a boxed-lunch factory. Burdened with chores and heavy debts and isolated from husbands and children, they all secretly dream of a way out of their dead-end lives.
A young mother among them finally cracks and strangles her philandering, gambling husband then confesses her crime to Masako, the closest of her colleagues. For reasons of her own, Masako agrees to assist her friend and seeks the help of the other co-workers to disme...
