In an era where the Tera Empire rules the continent, Rhea, princess of the small southern desert kingdom of Zephyros, lost her kingdom and family, becoming the leader of the rebels opposing the empire, known as the 'Red Phantom.' When she lost even her last hope after a long battle, someone reached out a hand to her. "If you return to the past, do you have the confidence to change it?" "Yes. Most definitely." Miraculously, she returned, gaining the chance to set everything right. She must prevent the destruction of her kingdom and save her benefactor's son. * * * Her benefactor had said, "You fought a siege warfare and failed. This time, go inside and start over." For a princess of a small nation to enter the heart of a great empire, she needs a status that no one dares to touch. She must become royalty. "Marry my son and become the crown prince's consort. It's a mutually beneficial transaction." It was the best plan devised by putting their heads together with her benefactor. Finally, Rhea sought out his son and boldly proposed, "Marry me." "I refuse." Her benefactor had said, "Unless that fellow is an idiot, he won't refuse." 'What should I do, Your Majesty.' Your son was an idiot!