Marta Siemińska, a woman in her thirties, is an accountant. Up to her ears in a quarterly balance sheet report, she discovers some serious misappropriation that leads to an internal investigation. Soon afterwards, Marta bumps into Jacek, a university classmate. Her monotonous life – a routine of daily rituals – slowly begins to change. The woman balances the books of her marriage, and it doesn’t look good: her husband comes out boring. The renewed acquaintance with Jacek turns into an affair.