A bedridden man in his late thirties named Keiji Matsuda spends his days confined to a sickbed, reflecting on his life with deep regret. Having no friends and feeling ostracized by his own family, he becomes convinced that everything would have been better if he had been born a woman instead. In his moment of despair, a mysterious voice responds to his wish, and his consciousness is swallowed by darkness.

Keiji awakens not in a fantasy world, but in the familiar apartment he once lived in, now transformed into a newborn baby girl. He has been reincarnated as Sumire Matsuda, the person he would have been if he had been born female, with the same parents and the same birthdate in a contemporary Japanese setting. Retaining the memories and cynical perspective of his previous life as a middle-aged man, Sumire is given a second chance at existence. Determined not to waste this new opportunity, she resolves to live life to its fullest and leverage her natural good looks to pursue a career as a top actress.

The story follows Sumire from infancy through her formative years as she navigates the complexities of growing up female while possessing an adult male consciousness. Rather than skipping over her early childhood, the narrative focuses on her gradual adaptation to her new body and identity. As she ages, Sumire begins taking steps toward the entertainment industry, aiming to achieve the fame and fulfillment that eluded her in her previous life. A notable aspect of the plot is the direct and unsubtle nature of her transformation, presented as a literal divine response to her dying wish, which frames the story as an exploration of a life do-over from a different gender perspective. The series chronicles her journey through the competitive world of acting, blending the tropes of reincarnation narratives with the behind-the-scenes drama of show business.