It's been nineteen years since Harry Potter, Ron Weasley, and Hermione Granger saved the wizarding world, and now they're back on a most extraordinary adventure, joined by a brave new generation that's only just arrived at Hogwarts School of Witchcraft and Wizardry. While Harry grapples with a past that refuses to stay where it belongs, his youngest son, Albus, struggles with the weight of a family legacy he never wanted. As past and present collide, both father and son are locked in a race through time as they battle mysterious forces, all while the future hangs in the balance.