She was once an assassin roaming the dark realm, staining her hands with blood to protect her parents. Now, reincarnated as the Third Princess, she’s persecuted on the eve of her wedding and married off to a supposed wimp of a husband. She's a royal princess through a political marriage, her identity and status clear—no one dares to challenge her! However, unexpectedly, the seemingly tranquil palace harbors hidden dangers. Internal and external troubles entwine, forming a complex web that drags her deeper. The Emperor's favor, her husband's concern, and an overbearing possessiveness—are they genuine or fake? And what kind of destiny awaits her due to her background?