Lin Mo practiced in Kunlun for eighteen years and was driven down the mountain by his master who loved him at dusk. The master told him that he was the orphan of the murdered gang leader and gave him a marriage certificate. After Lin Mo came down from the mountain, he wanted to break off the engagement but was humiliated instead. He refused the position of gang leader offered by his own gang and sneaked into the enemy's gang alone as an undercover agent. He secretly fell in love with Su Wanqing, the leader of the enemy's branch. In the end, he killed his enemy and slept together with his sweetheart.
