London, 1880

Pearl Ellicott dreams of falling in love and having a family of her own. Until then, she is content working as a governess for young Maxwell, tending to his education and fragile health. Together, they explore the mansion's empty rooms and secret passageways in search of the haunting violin music that seems to come from nowhere.

Oliver Waverly is young and independent, with plans to sell the run-down mansion once he inherits. But his strained relationship with his reclusive uncle, Arthur Ravenscroft, complicates matters when Ravenscroft refuses to relinquish Shadowbrook House without explanation.

As they spend more time together, Oliver slowly becomes enchanted by Pearl's wit and love for Maxwell, and Pearl finds herself irresistibly drawn to Oliver's passion and resolve. However, the social gap between the heir and the governess makes pursuing a relationship difficult.

Oliver must decide whether to follow his heart or adhere to his family's expectations, while Pearl grapples with her fear that if Shadowbrook House is sold, she will lose her job, her found family, and her chance for long-lasting love. Will the lovers part ways or choose to be together despite the odds? The answer lies within the walls of Shadowbrook House and the echoes of its haunting past.