In an age where agents operate unknowingly to the populace, a certain Chloe of the Hagur Kingdom spends her days completing difficult mission after difficult mission with her unparalleled skills in disguise and combat arts. However, following her boss's betrayal, she revised her life plan: to live a normal, happy life as a regular citizen by the name of Victoria in the nearby kingdom of Ashberry. Unexpectedly, her first happy day of her new life as "Victoria" was marked by coincidentally becoming the guardian of a certain girl and beginning to meet many people. On the other hand, shadows of assailants approach the talented Victoria at the behest of the Second Prince with an interest in Victoria's strength, and the organisation—!?