Book 1: Albus Potter and the Chalice of Light and Darkness

Halfway through school, the children begin to fall sick, soon the infirmary is extremely crowded, and this generation of wizards and witches of Hogwarts is on the verge of defeat by the mysterious illness. Luckily, Albus Potter, second son of the great Harry Potter, is not one of them. When his best friend Alexander falls ill, he must find the truth behind the disease, and soon!