Voldemort, long dead, has never had all of his secrets revealed.
Death Eater rounded up and imprisoned, all seems safe to the famous Harry Potter and his family. Ginny, his wife and his three children; Albus, James and Lily. Though, nothing can be concluded forever. Darkness always returns in the form that one least expects. Such as, the Malfoy's. Draco's son, Scorpius, isn't exactly the Potter's friend. Though he is not an enemy. Not to everyone. Sometimes, though, enemies must be depended on for a common friends saving.
A new student is welcomed to Hogwarts with open arms, a transfer from Durmstrang. Sorted into Gryffindor house and with no one having any knowledge of his past, he is a secretive and quiet boy. A brilliant and brave person, no matter what his soul.