While transporting the boy vampire, Kwok accidentally strips the talisman off its forehead and breaks the charm.

It enters a house by chance and befriends a little girl, who mistakes the young vampire for an illegal immigrant boy.

One of Kwok's students was bitten by the male vampire while fighting it, so he goes to see Dr Lam for treatment.

Together with his daughter Gigi and his prospective son-in-law Yen, Lam embarks on a quest to destroy the vampires.

Lam tells Yen and Gigi to secretly follow Kwok's student back to the lab and find the vampires.

While Gigi goes to notify the police of their discovery, Yen accidentally removes the talismans on the vampires' foreheads and awaken them.

However, after seeing how the children have grown fond of the boy vampire, Yen decides to inject it with anesthetics instead of killing it.