Yue and Nodoka are practicing magic when a particular spell catches their attention: The Red String of Fate. It is said that this spell links you with your destined partner. Nodoka decides to give it a try, only to find herself tied to Negi. However, the spell is not actually the Red String of Fate; it is merely a red string that connects two people. A magical red string that happens to be impossible to cut. Delightful. Meanwhile, Ayaka invites the class on a complimentary trip to her family's newly built spa resort. Bound together for at least a day, will Negi and Nodoka be able to make the most of this free trip without crossing the line...?