On a snowy night, Su Qi is attacked by beggars but is saved by Yan Chen’an, the heir of the Yi Prince’s Manor, because her father once rescued the manor’s elderly matriarch. In gratitude, Yan Chen’an takes her in, and Su Qi becomes his adopted sister. As they grow up together, unspoken feelings begin to bloom between them. However, the vast difference in their social status keeps them from ever confessing their love.