Mizuki Sayako

Reiji Kikukawa, who has a strong sense of justice, graduated from the police academy with the lowest score ever. He becomes a police constable, but is suddenly fired by the Police Chief due to "disciplinary" issues. In actuality, the firing is part of a carefully orchestrated plan to set him up as an undercover cop in the Yakuza.

Sana Haitani (Kasumi Yamaya) is a member of an idol group. She's following the dreams of her now deceased older sister who always wanted to become a top idol. Unfortunately, Sana's idol group is disbanded. She is then kidnapped and taken to an uninhabited island. What awaits for her is a card battle. If she wins in the card battle against other kidnapped idol girls, she can become a top idol. But, if Sana loses ... she will die.

In 2002, “Fukushu Ho” (Revenge Law) has been implemented. “Fukushu Ho” allows victims or victims' family to exact revenge against criminals directly. Yasuyuki is a middle school teacher. He is opposed to “Fukushu Ho,” but he changes his mind after his wife is murdered. Yasuyuki decides to take revenge on the murderer who killed his wife. According to “Fukushu Ho,” Yasuyuki travels to an island which has been designated as the get my revenge location. At the same time, members of a radical environment protection group, who committed terroristic acts indiscriminately, are at the same island. Family members who lost loved ones in the terroristic acts arrive on the island to exact revenge. The victims' families have 18 hours to take revenge. Weapons, food and GPS are given to the families and the locations of the criminals. If the revenge acts are not carried out within 18 hours, the criminals are released.

Ando can't accept this his daughter Kana committed suicide. Kana fell from the ledge of a school building and died. Ando attempts to find out the truth behind his daughter's death. He becomes suspicious of his daughter's former classmate, Saki. Saki isn't a typical high school student and she aspires to work in show business. She dominates her high school with her charisma.