A modern woman, Clara Hayes, unexpectedly transmigrates into a book and becomes the princess consort of Leo Vance, Prince Chen. With a God's-eye view, she knows why Leo Vance favors his concubine and neglects the original wife. She also knows that the original wife in the book was killed by Leo Vance's concubine, Clara Hayes, because of her phoenix fate. To save her life, Clara Hayes looks for a medium to return to reality while fighting Clara Hayes. Clara Hayes thought she could thrive in the world of the book, but who knew that due to her arrival, the plot development deviated from the original book. So she has no choice but to join forces with Leo Vance to deal with Clara Hayes. By chance, she meets Sam Holden, a fellow villager who also traveled through time, and learns that the medium to return to reality is in the imperial ancestral hall, which can only be opened when the crown prince is appointed. Therefore, Clara Hayes decides to help Leo Vance compete for the throne. Facing the open and hidden harm from the competitor Julian Vance, Clara Hayes has no choice but to use modern knowledge to fight him, and finally successfully sends Leo Vance to the throne.