BanG Dream! Yume∞Mita follows the virtual girl band Mugendai Mewtype (Yumemita) as five girls with unique, shining talents struggle to transition from isolated, individual performers into a cohesive musical group. The series explores their shared, fated journey that transcends virtual dreams and concrete reality, aiming for a global debut while dealing with the challenges of navigating, and ultimately surviving, both their digital and real-world struggles.