Chloe is a daughter who has been abused by her former fiance and family for many years. Due to their betrayal, she was married off to the cold-blooded and rumored duke, Glenn, but after a white wedding, they became a real couple. Just as they are about to enjoy their time together, they receive a request from a neighboring country for help in restoring an "S-rank magic potion. Glen warmly watches over Chloe, who is eager to play a major role as a Potions Master, even though he feels possessive of his wife. When the couple travels to a neighboring country together, Chloe is very active, demonstrating her inquisitiveness and wealth of knowledge. While carrying out a national project, Chloe also saves people with an original medicine that she developed as a side project, and she is constantly overturning the conventional wisdom of magical medicine. Meanwhile, the beautiful third princess of a neighboring country shows an interest in Glen, and is making a disturbing plot to get her hands on him... The second act of this fantasy story about an oppressed young lady who blossoms her rare talent!