After his fifth birthday, the heir of Pemberley disappears in the waters of a mighty river while the Daltons find the son they had waited for many years.

Violet and Aaron Dalton were traveling to Manchester after a pleasant family reunion in Lambton. Due to inclement weather, they had to stop at an inn in a small town. There, they found a little boy on the bank of a river. After unsuccessful efforts to find his parents, they adopted and raised the orphan boy as their son. Simultaneously, George and Anne Darcy lost their son in an unfortunate tragedy, and their lives would never be the same.

Years later, after losing the man he most admires, young William Dalton travels to London to fulfill his father's dream. There, he will find love but also a truth he is unprepared to face.