Harry ignores warnings not to return to Hogwarts, only to find the school plagued by a series of mysterious attacks and a strange voice haunting him. (IMDb)
The plot is much meatier this time around: Introduced immediately, it’s a tantalizing monster mystery with connections to the past that grows darker with each passing scene, although it could have been explained with a little more subtlety. New bits of magic and characters bring more humour (see the Polyjuice Potion escapade and the outrageous Lockhart) but also more awkwardness (nearly every spell seems to do the same thing). Another unearned too-happy ending caps it off on cheesy note.