"Idoly Pride" centers on the intersecting lives of aspiring idols and those who support them, set against the backdrop of the competitive idol industry. The narrative begins with the tragic death of Mana Nagase, a beloved and talented idol, which leaves a profound impact on her manager, Kotono Nagase, and her younger brother, Makoto. Determined to honor Mana's legacy, Kotono and Makoto embark on a journey to nurture a new generation of idols, forming the group "IDOLY PRIDE."

The story introduces a diverse cast of characters, each with unique motivations and challenges. Among them are Sakura Kawasaki, a cheerful and determined girl with a natural talent for singing; Rei Arisugawa, a reserved and disciplined performer with a mysterious past; and Kotono herself, who transitions from manager to mentor, guiding the group with her deep understanding of the industry. The series explores the personal struggles and growth of these characters as they navigate the pressures of fame, rivalry, and self-discovery.

As the group prepares for their debut, they face numerous obstacles, including internal conflicts, external competition, and the high expectations set by Mana's legacy. The narrative delves into the dynamics of teamwork, the importance of perseverance, and the emotional toll of pursuing dreams in a demanding industry. Through performances, rehearsals, and personal interactions, the characters gradually forge bonds of friendship and mutual support, striving to create their own identity while honoring the memory of Mana.

The series balances moments of lighthearted humor and heartfelt emotion, providing a multifaceted portrayal of the idol world. It highlights the dedication required to succeed, the sacrifices made along the way, and the joy of connecting with fans through music and performance. By the end, "Idoly Pride" offers a compelling exploration of ambition, legacy, and the transformative power of art, leaving a lasting impression on its audience.