On a stormy night, college student Rei (played by Takuto Bin'ya) is stranded in the middle of the road due to a car breakdown. A young man riding a motorcycle appears in front of the helpless Rei. He skillfully repairs the car and leaves without giving his name. Rei can't stop thinking about him, the one who helped her, and her friend Kai (played by Reo Nagatsuki) tells Rei about what happened that night, filling her with longing for him. At that moment, Rei hears tales of the 'legendary senior' in their architecture department. Only then does she realize that the senior who saved her that day was Arashi (played by Masaki Nagumo). The two reunite at a gathering with seniors in their department, but Arashi claims that he 'doesn't remember' Rei, leaving her disappointed. However, on the way home that day, Rei is once again helped by Arashi after her car breaks down and ends up at his house. There, Arashi demands something in return for fixing her car, and Rei, unable to resist his charm, almost gives in. But then she regains her senses and manages to evade Arashi, making it through that situation. Yet afterwards, Arashi appears before Rei again, demanding payment for his help. Even though she tries to avoid him, frustrated Rei decides to take revenge by sneaking into an illegal motorcycle race that Arashi is participating in, along with Kai. However, in the heavily guarded venue, it's Arashi who saves Rei from a crisis. Meanwhile, her friend Kai also finds himself in a dire situation and encounters Kazuma (played by Akira Suzuki) in the midst of chaos...