DCU

After his father's death during an explosion at sea 15 years ago, Haruki Senoh joins DCU, a team of crimefighting divers led by Captain Niina, the man who saved his life.

A violent murder rocks the small fishing town of Kita-Noto to its core; local fisherman and anti-poaching activist Ryuhei Shimada has been brutally slain with a giant fishhook.

Sanchez's true identity is revealed; he is in fact Joan Lopez, a dangerous bomber and member of Black Butterfly, an international terrorist organisation.

The team is devastated, and the situation is made worse when the DCU is withdrawn from the case; this doesn't stop the team members conducting their own investigations.

When the drug-trafficking son of a high-ranking politician is kidnapped, the DCU must tread carefully - a family secret is at stake.

The DCU are called to Yokohama Pier, where the body of a woman has washed up; evidence connects the water inside her lungs and the aquarium the dead woman's fiancé was working for.