Mika Yoshida, a beauty influencer who runs a cosmetics company, has led a peaceful life, gaining huge support from women. However, one day she tripped on the stairs and ended up in another world from the book she was reading. There, in a world where many women die because of the lead contained in cosmetics, Mika was reincarnated at the age of 28 as Wang Lin, a maid to a noble princess who was destined to die because of the white powder in cosmetics. Mika, who knows the ending of the book, tries to stop Koukihi from dying. With the help of those around her, Wang Lin's (Mika) journey begins as she strives to help the Noble Queen and change the world's sense of beauty.