B-PROJECT: Kodou＊Ambitious follows Tsubasa Sumisora, a new hire in the A&R department of the major recording company Gandala Music. She is immediately tasked with overseeing 'B-PROJECT,' a special idol unit comprised of three sub-groups: Kitakore, THRIVE, and MooNs. Tsubasa must navigate the complex personalities and professional pressures of the ten talented idols while helping them navigate the competitive entertainment industry. As the series progresses, Tsubasa faces the challenges of managing conflicting schedules, artistic differences, and the high expectations of their agency. The story explores the bonds formed between the members of B-PROJECT as they strive to achieve their dreams of stardom, balancing their individual identities with the necessity of working as a cohesive, high-performing unit under Tsubasa's guidance.