Lan Weiling is the second daughter of Lan Jun, the president of Lan Group, which is ranked seventh in the world. At the age of 17, she helped Lan Group survive a major crisis and was greatly favored by her father Lan Jun. Her achievements in the world of mathematics surprised everyone. Music is her special skill. She is more dazzling than the moon at night. She is extremely rebellious. The charming princess transforms into a commoner girl. She meets the playboy Su Yuxuan by chance. What is the complicated and complicated plot?