After her mother’s sudden death, nineteen-year-old Sei Minagawa discovers a bankbook containing 1.5 billion yen – money secretly sent every year by a father she has never met. Determined to return the fortune, she follows a strange man named Iba into Tengoku District, a dazzling and dangerous nightlife hub controlled by her father, a powerful figure known as the king of the city. To reach him, Sei must climb the ranks of the entertainment world, and Iba guides her into the show club Misty, where she is told she must become the “Nova Queen” – the top performer – to earn an audience with her father.

Sei, who had been working multiple jobs and saving for a stable future as a government official, finds herself thrust into a world of fierce rivalries, seduction, and survival. She possesses a sharp memory and keen observational skills, which she uses to learn dance routines by watching others and to win over customers. She faces hostility from senior dancers like Luna, the club’s number one, but gradually earns her own place on stage. Alongside Iba, who becomes both her mentor and reluctant roommate, she navigates the treacherous politics of the nightlife scene.

As Sei’s performances gain attention, she attracts key patrons such as Kaito, a wealthy young man who offers access to the exclusive Stella Tower where her father resides. The story delves into her past, including the hidden circumstances that forced her father to abandon her mother and the role of the mysterious club owner Rouou, who knows the truth about Sei’s lost childhood memories. Rivalries intensify with other top-ranked performers like Sayoko, her father’s wife, and Rinne. The narrative culminates in a high-stakes competition to decide the Nova Queen, with Sei racing against time to perform on the final stage and confront the father who has shaped her fate.