"Giri Giri Sisters" centers on the lives of two sisters, Natsumi and Yuzu, who navigate the complexities of their relationship while pursuing their dreams in the competitive world of professional wrestling. Natsumi, the older sister, is a disciplined and determined wrestler with a strong sense of responsibility, while Yuzu, the younger sister, is more carefree and spontaneous, often relying on her natural talent. Their contrasting personalities create both tension and camaraderie as they strive to succeed in the same field.

The story begins with Natsumi returning to Japan after training abroad, aiming to reclaim her place in the wrestling scene. Yuzu, meanwhile, has been making a name for herself domestically, though her lack of discipline sometimes hinders her progress. The sisters' paths cross when they are both recruited by the same wrestling promotion, setting the stage for a dynamic filled with rivalry, mutual support, and personal growth. As they face formidable opponents and internal struggles, the sisters must confront their insecurities and learn to balance their individual ambitions with their bond as siblings.

Throughout the series, the narrative explores themes of perseverance, family, and self-discovery. The wrestling matches serve as both literal and metaphorical battlegrounds, reflecting the characters' emotional and psychological challenges. Supporting characters, including fellow wrestlers, coaches, and rivals, add depth to the story, highlighting the competitive yet collaborative nature of the wrestling world. The series balances intense action with moments of humor and heartfelt drama, creating a well-rounded portrayal of the sisters' journey.