Sota Hatate is a new student at Hatagaya School. His cold and impersonal manner draws the attention of Nanami Knight Bladefield, a princess of a European nation, and she confronts him about it. He reveals that he is the only survivor of the sinking of the cruise ship Premium Ambriel. On that tragic day he received a special power from a mysterious stranger: the power to see people’s fates in the form of flags sprouting from their heads. Some flags are simple things like “friendship” flags, but others are more ominous, like “death” flags. Over the next few days, more and more classmates and friends are drawn to him and live with him at the Quest Dorm, and Sota must occasionally use his powers to alter their fates. He and his new friends and dormmates get up to all kinds of fun adventures. However, he eventually discovers that there is more to his power, and the world itself, than he realized...