The year is 1900. Teresa, the only child of a wealthy family in northern Spain, only thinks about herself. Even as a child, she managed to hide her small misdeeds and make others pay for them. When Miguel, her secret lover, accidentally dies in her arms, Teresa turns to Julián, her mute and obedient neighbor, who has been in love with her forever. He agrees to remove the body from the room under the promise of her love. However, Mauricio, a young aristocrat, asks for the girl’s hand, and Teresa will kill to preserve her social harmony. Her secrets and her victims will remain sunk at the bottom of the lake.