Three young girls, strangers from diverse backgrounds, discover a mutual love and talent for music. Their paths intertwine at a concert featuring a renowned music school's prodigy, igniting a shared aspiration for fame. Enrolling in the school individually, they reunite in a special class for exceptional talents, where their voices blend in perfect harmony. Bound by more than just music, they unravel the mysteries of a blue stone and a captivating melody, pondering their impact on the trio's future. Will the elusive Angel of Music bless their dreams, or will the trials of music school threaten to shatter their bond forever?