The Invincible Son-in-Law

Leo Lawson buys a fake manual from an old beggar. His Innate Dao Physique turns fake techniques into real combat power. He saves young mistress Faye Fairchild. After their matrilocal marriage. Wuxiang Hall and Shindo Sect collude with Dongyang forces. Leo defeats enemies with the fake manual. The old beggar reappears, Leo awakens his Innate Dao Physique. He defeats Dongyang sword sage Yagyu Muneyoshi, becomes leader of the Central Plains' Martial World, protecting loved ones.