In Jakarta, Indonesia, Lieutenant Wahyu organizes the invasion of an apartment building that is the safe house of the powerful and cruel drug lord Tama and his gang. The SWAT team breaks in the building but one lookout sees and warns the gangsters and the police force is trapped on the seventh floor. They learn that Lt. Wahyu has not informed his superiors about the operation. Now the police officers have to fight with limited ammunition against the armed and dangerous gangsters.

In the ruthless underground world of the yakuza, no one is more legendary than boss Kamiura. Rumored to be invincible, the truth is he is a vampire-a bloodsucking yakuza vampire boss! Among Kamiura's gang is Kageyama, his most loyal underling. However, the others in the gang view Kageyama with disdain and ridicule him for his inability to get tattooed due to sensitive skin. One day, assassins aware of boss Kamiura's secret arrive from abroad and deliver him an ultimatum: Return to the international syndicate he left years ago, or die. Kamiura refuses and, during a fierce battle with anime-otaku martial-arts expert Kyoken, is torn limb from limb. With his dying breath, Kamiura bites Kageyama, passing on his vampire powers to the unsuspecting yakuza. As he begins to awaken to his newfound abilities, Kageyama's desire to avenge the murder of boss Kamiura sets him on a course for a violent confrontation with Kaeru-kun, the foreign syndicate's mysterious and seemingly unstoppable leader!