Kaeden Boa Vista is an architecture student who promised not to get himself involved in any form of police work,, opposed to what his father wanted when he was still alive. His life got tangled with a murder case that changed his life. As he succeeds becoming an architect, he gets involved in a series of murder cases and discovers a secret that his father kept from him. Crimes have gone up and the criminals are becoming more intelligent in their orchestrations. Kaeden later learns that a certain crime planning group has been doing it for many years, led only by a mysterious man named "Master Murderer from Hell".