A year has passed since the disappearance of Shiro, the Silver King. Kurou Yatogami and Neko have searched diligently, but without result. Their investigation brings them into contact with members of the now disbanded Red Clan HOMRA—Rikio Kamamoto and Anna Kushina—who are being pursued by the Green Clan, as the latter desires Anna's powers for their own ends. The members of Scepter 4 are called upon, alongside Kurou and Neko, to rescue Anna, the mascot and only female member of the ruined Red Clan, from the enemy's clutches. They also hope to find Shiro by using the young girl's powers. Amidst the crisis, the group is forced into a power struggle when the Green Clan threatens to overtake the Gold King's domain. The second installment in the K Project series, K: Missing Kings, continues the story of a young boy caught up in a psychic war between seven kings. It showcases each character's struggles following the losses of their respective Kings.