After the outbreak of the unidentified virus "Lost Christmas" in 2029, Japan has been under the control of a multi-nation organization called GHQ. Ouma Shu is a 17 years old boy who has a psychic power in his right hand. He can use the power "Ability of King" to extract tools or weapons from his friends. He has been avoiding making trouble for others but his life changes when he meets a girl named Yuzuriha Inori, a member of a resistance guerrilla group called "Undertakers", whose members pilot mecha weapons to fight against the government.