To write a novel about vampires and night watchers, you can refer to the following plot: In an ancient era, vampires became legendary demons, and night watchers became warriors who hunted these demons. The protagonist of the story was a young vampire named Dracula. Dracula had always dreamed of becoming a night watcher, but his family refused the position because they thought it would make their family enemies of humans. Dracula was disappointed and lonely, but he did not give up. He decided to find an opportunity to prove his worth. By chance, Dracula met a young night watchman named Mark. Mark told Dracula that the duty of the night watchers was not only to kill demons but also to protect humans. Dracula was moved by Mark's words and decided to accept the position of night watcher and protect humans from the demons. However, when Dracula became a night watcher, he found that demons were not as easy to deal with as he had imagined. Some demons were so cunning that they could even use humans to attack the night watchers. Dracula began to feel helpless and confused, but he did not give up. He continued to learn and improve his skills in order to better protect humans. Dracula was injured in a battle with a large demon. He asked Ma Ke to help him return to the human world, but Ma Ke refused. Dracula was very disappointed and angry, but he did not give up. He healed himself with his own blood and returned to the human world. After returning to the human world, Dracula found that he had fallen in love with a human girl. He decided to protect this girl in his own way and prove his worth. Dracula and the girl had experienced many adventures together. They hunted demons together to protect humans. In the end, Dracula proved that he was a true night watcher, and his value was respected and recognized by the people.