Five-year-old Millchette, who grew up in a brothel, is reincarnated into the world of the game “Witch’s Potion Workshop.” To survive, she uses her reincarnated knowledge to create illicit potions for the mafia. One day, the mafia is destroyed in a conflict. Millchette continues to be exploited, but she is rescued by the mysterious former royal court magician, Clifford.

“Making potions without the permission of a legitimate magician carries a 10-year prison sentence. How about it, Millchette? Why don’t you become my daughter and live with us in the countryside until the statute of limitations runs out?”

Clifford, the court magician, is also a genius magician who has been exploited by the royal court for his abilities. Wanting to live their own lives, the two become a contract parent-child relationship …