While he is accrying a dead corpse to the yam village, the apprentice of the master is traped and the corpse is robbed by a mad scientist who wants to bring life into the dead.
After being fed by medicines, the corpse escapes and becomes a vampire.
The apprentice tells his master that the corpse has been delivered, but his master discovers the truth and he and his two students, with the help of the corpse's grand daughter, try to find the vampire, who is stopped only when he hears the music of the mini watch he had offered to his grand daughter years ago.
Finally, it's only with the help of the great taoist (Lam Ching ying, as usual)that they can return the corpse to his family.
A very funny movie, with Stanley Fung as the master who has no manners, and a lot of gags.