The heroine takes the stage name Andrella and sings in SWEET. She is both a singer and a designer, and is proficient in piano and violin. She has conquered countless people with her unique voice and devilish dance moves. Her mysterious family background and unique thinking make people always guess her. Meeting the four princes of patron saint produced a wonderful chemical reaction. Love and being loved, relief and entanglement, just in a thought. In the end, who is the destined person of Masked Andrella?