Lizet, a magical tool maker, was used like a slave by her mother and sister in her family's magical tool store. While living in rags and without food, she finally collapses at a ball she is forced to attend! Lise is protected by Dior, the Duke of Ice, who happens to be there and is renowned as a genius magician. It seems that he was once saved by a magical tool that Lise made, and he praised her highly, saying, "You are a legendary magician..."? A complete turnaround from the hellish days at his parents' house. With Dior's kind and happy life, surrounded by delicious food and energetic spirit dogs, she is ready to start her new life! With Dior's encouragement, she also starts running a magical tool store, which she has always dreamed of! In order to repay Dior and the others for giving her a warm place to stay, Lise is determined to make many magical tools that will make everyone happy. Her reputation spreads rapidly, and she even receives requests from princes and the daughter of a knighthood leader! However, there is no way that Lise's sister will stand idly by and watch her success...?