The lonely young reincarnated princess Leticia is married off to Diana, a country protected by dragons. Her husband is King Ferris' younger brother, who is rumored to be cold-hearted, but the two outcasts hit it off right away! They form a secret alliance, sharing the difficulties of life, and enjoy rose water afternoon tea together, bring him midnight snacks out of concern for the prince's small appetite, and are comforted by dreams of a dragon that resembles him when they sleep...and unexpectedly, they begin to live a fluffy and heartwarming life together! ? However, the right to the throne and the fate of Ferris, the descendant of the dragon king, which are entangled behind the marriage, soon lead them into the vortex of conflict. "I will definitely protect you," "I have to protect His Highness." A lyrical fantasy with an age gap in which two people who want to protect their modest happiness join hands!