Jiyu, a student at the prestigious Astor School for girls in Manhattan's Upper East Side, lives in the same apartment building as Hunter, who attends the neighboring Alton School for boys. However, there is a gap as vast as the pyramid’s hierarchy between them: Hunter lives in a luxury penthouse on Fifth Avenue overlooking Central Park, while Jiyu lives in a rented unit on the first floor. Their personalities are just as opposite—Jiyu loves sitting quietly with a book, while Hunter can't stay still for a second. When Hunter shows a talent for tennis and begins participating in tournaments, he starts winning every match that Jiyu attends, leading him to believe she is his lucky charm. Annoyed by his constant demands for her to show up at his matches, Jiyu tells him a little lie about a psychological trick to keep her presence felt without being there physically. With a small touch on his palm and a fake kiss, Hunter returns the next day with the winning trophy. But even for them, the turbulent storms of youth eventually arrive. Amidst their bickering and denials of feelings, a tragedy strikes Jiyu. The Hamilton family takes her in, but she finds herself relegated from being Hunter’s friend to being his servant. Now, Jiyu uses Hunter to survive, while Hunter uses Jiyu for his winning streak. In tennis, "Love" means zero. A "Love Game" is a match where one player has a score of zero. In this entangled relationship of love and hate, with a net between them, who will be the ultimate winner of this Love Game?