Come baciare un vampiro

In How to Kiss a Vampire movie, eight years after Vincent abandoned her, Ella—now a single mom—is pushed off a rooftop and saved by a mysterious, flying masked man. She wakes up to find Vincent at her side. He denies being the masked man but insists his enemies are targeting her and demands she move in with him for protection. Why is the man who broke her heart now acting like her savior? And why does he seem... not entirely human? Can Ella trust him again—or is he hiding more than just a mask?