In the fictional kingdom of Elderon, the legitimate princess Isolde, who was poisoned by her uncle and usurped the throne, sneaked into the enemy's palace under the guise of a lowly maid. She endured slaps, humiliation, and framing, secretly contacting old ministers and collecting iron evidence of usurpation in cold eyes and murderous intent; From mutual testing to standing shoulder to shoulder with the ruthless Shadow Guard commander under the regent, the double agent and identity reversal are shocking step by step. From a humble maid to the legitimate heir who launched a counterattack, she awakened the morale of the army with the imprint of royal bloodline, counterattacked and killed back to the throne, while the defeated regent secretly colluded with foreign enemies to make a comeback. This battle of royal revenge has just begun.
