As the transmigrated ancestor of Doyool, her favorite novel character, Seolryeon tries to arrange everything to make his life easier. But when she reincarnates as Yerin, his young bride, she finds that something has gone wrong over the years. The Frost Palace has fallen on hard times, and its people are suffering. Together with her new husband, she must right wrongs and root out the corruption that has befallen this once-great family. But how much can two young people do alone?