Darren, Mr Crepsley (vampires) and Evra left the Cirque du Freak so they could protect Mr Crepsley's home city from vampaneze.
While Darren goes out, he sees Debbie, a normal girl, and later they become girlfriend and boyfriend.
One night, Mr Crepsley started acting strangely, he would disappear every night and not mention where he's going.
So Darren and Evra followed him, one night they saw him following a man. It looked like MR Crepsley was going to kill him, but when Darren tried to save the man, he found out that Crepsley was trying to save him from Murlough.
Murlough was a vampaneze who lived in the sewers. Vampaneze are different from vampires, vampaneze kill when they drink blood while vampires don't.
Debbie invited Darren over for Christmas dinner and when Darren got home he found out that Evra was kidnapped.
But when Murlough was about to take Evra's life, Darren traded Evra's life for Debbie's and led Murlough to her so Murlough could drink her blood.
When Darren and Mr Crepsley went out searching for Evra in the sewers, Darren ran aheadand got captured.
But when Murlough tries to kill Debbie, it is just a dummy,and part of a bigger plan. Then, Mr Crepsley shows up and kills Murlough, saving the city