Raised as a professional assassin, Rose finds herself caught up in an unexpected inheritance dispute after receiving a will. In pursuit of the "happiness" her late best friend spoke of, Rose returns to the manor where she was born, disguised as the young lady's new mate. As she lives with her cousin Beth, Rose's definition of "happiness" begins to change. Eventually, she gives up the dream life that seemed so close to her heart and takes up a gun again to protect her loved ones. But once her revenge is fulfilled, an even more cruel lie awaits her... Will the crimson roses Rose planted be able to bloom even in the harsh winter?