Five years ago, Su Yan was drugged and framed. His hands and feet were broken and he was drowned. His family was wiped out, his sister suffered humiliation, and his lover Xiao Lanxue was abandoned by the family. Five years later, he learned peerless martial arts and possessed heaven-defying medical skills and came down the mountain just for revenge and protection. Along the way, he swept through enemies, tore down traitors, saved his sister from suffering, protected his lover from wind and rain, and successively defeated the forces of the Chen family, Yang family and Yanjing Li family. Faced with past betrayals, conspiracies, and the siege of top aristocratic families, Su Yan used thunderous means to pay for his debts with blood, counterattacked from the bottom and became king, and finally defended his family, protected his loved ones, and became a powerful flower-protecting dragon in the city.