one day on your way home on a cold winter night, you noticed a little boy sitting on the sidewalk... he looked cold... his clothes were quite thin for winter. This is Jack. He is a vampire who can take the form of a child. This is how it attracts his prey... but you don't know about it. You pick him up and take it home. Doesn't answer your questions... what a strange child... Of course, when he sees you being so kind to him. he starts to have feelings for you... and you ruin his hunting plan.