"Hana Yori Dango" centers on Tsukushi Makino, a working-class girl who enrolls at Eitoku Academy, an elite school dominated by wealthy students. The school is ruled by the F4, a group of four privileged boys: Tsukasa Domyoji, the hot-tempered leader; Rui Hanazawa, the quiet and introspective member; Sojiro Nishikado, the charming playboy; and Akira Mimasaka, the laid-back and perceptive one. The F4 wields immense influence, and students who cross them are marked with a red card, leading to relentless bullying until they are driven out of the school.

Tsukushi initially tries to avoid trouble but eventually stands up to Tsukasa after witnessing the F4's cruelty. Her defiance earns her a red card, but instead of succumbing to the pressure, she fights back, gaining the respect of Rui and the other members. Tsukasa, initially hostile, becomes intrigued by her resilience and begins to develop feelings for her. This sets off a complex love triangle involving Tsukushi, Tsukasa, and Rui, as Tsukushi struggles to navigate her emotions and the challenges posed by their vastly different social statuses.

As the story progresses, Tsukushi faces numerous obstacles, including Tsukasa's overbearing mother, who disapproves of their relationship, and the return of Shizuka Todo, Rui's childhood friend and first love. The series explores themes of class disparity, loyalty, and personal growth, as Tsukushi's determination and integrity gradually influence those around her. The F4 members, particularly Tsukasa and Rui, undergo significant character development, with their relationships evolving in response to Tsukushi's presence.

The narrative balances romance, drama, and moments of humor, with Tsukushi's journey serving as the emotional core. Her interactions with the F4 and other characters highlight the complexities of love, friendship, and societal expectations. The series concludes with Tsukushi and Tsukasa's relationship reaching a pivotal moment, reflecting the growth and challenges they have faced together. "Hana Yori Dango" remains a classic in the shoujo genre, known for its compelling characters and exploration of themes relevant to its audience.