Flagfall is a story of a chess prodigy named Tsukima, he has the power to stopped time through thepower of his ore. All of his life was spent to played chess and helped his family at his village. Until one day he was chosen as part of the pieces that needed for the 3rd Princess Silica to succeed at her campaign of becoming the ruler of her country. He was forced and tempted because of the amount of fortune he could get from helping her. Little he knew, he encounter trouble after trouble that the princess had cause. This was a story of how Tsukima survived his life with the princess.