A possessed piñata, seeking to avenge the savagery that humanity has inflicted on his kind, picks off a group of friends, one by one, in an unending night of terror.

When a knight in a futuristic medieval world is framed for a crime he didn't commit, the only one who can help him prove his innocence is Nimona -- a mischievous teen who happens to be a shapeshifting creature he's sworn to destroy.