Chiko uses an movie shoot as an excuse to visit "White Hair Island", where she may find information regarding Twenty Faces. Upon entering the island, Chiko spots Ken whom she had thought dead. Later, when the two get a chance to speak to one another, Ken reveals that he blames Twenty Faces for all the misfortunes that have befallen him after his "death". A man is murdered on the island, and Chiko decides to investigate the occurrence. Chiko is captured by a mysterious white haired person, who reveals that he wants to find and kill Twenty Faces. The "White Haired Devil" moves to kill Chiko, however Ken arrives and manages to stop her. It becomes obvious that the "White Haired Devil" is not susceptible to injuries, however manages to trap her. Ken quickly disappears, and Chiko and Shunka then return home.

After Ken tells Chiko that Twenty Faces likely lived from falling from the airship, the two move to pilot the airship. People on the airship who had been poisoned wake up as they had not been poisoned. In the meantime, Tome manages to get parental rights over Chiko and attain a mansion for them to live in. Back on the airship, bombs planted on the airship force Ken and Chiko to land the airship into the sea. Chiko, Ken, and everyone on the airship are soon rescued. Akechi, who had been following the airship, reveals what Twenty Faces is trying to find, the fourth state of water. Chiko and Tome are reunited at a hospital.

Twenty Faces and Chizuko escape from the research facility. As Chizuko goes to see the destruction caused by the "Fourth State of Water," Kohei shows up on a rooftop, and while claiming to be Twenty Faces, says he plans to steal Tokyo. The crowd around the destruction breaks into mass hysteria. They see Chizuko among the crowd and decide to use her to stop Twenty Faces. As they give chase, Chizuko flees. Every time she gets away, more are there to chase her. Finally, when she is cornered on the top of a building, Ken shows up in a new airship to save her.