『音樂大(da)(da)師課第四季』介(jie)紹:十方天(tian)(tian)(tian)域(yu),強者為(wei)尊(zun),少年林天(tian)(tian)(tian)被(bei)未(wei)婚妻蕭韻(yun)聯合(he)莫家長子莫森(sen)騙光了家產(chan),還被(bei)推(tui)下懸崖。僥(jiao)幸未(wei)死的(de)(de)(de)他(ta)終于(yu)幡然醒悟,決心向兩家復仇(chou)(chou),奪(duo)回屬于(yu)自己的(de)(de)(de)一(yi)切,在懸崖之下,他(ta)偶獲神(shen)秘黑(hei)鐵劍,此劍暗藏神(shen)功(gong),竟助他(ta)煉成無上武(wu)(wu)道(dao)。因實(shi)力不足(zu),他(ta)決定(ding)先拜(bai)入(ru)九(jiu)陽武(wu)(wu)府,待實(shi)力成熟后再行復仇(chou)(chou),不料武(wu)(wu)府長老卻是莫森(sen)的(de)(de)(de)大(da)(da)伯,林天(tian)(tian)(tian)內外交困(kun),危機(ji)重重。林天(tian)(tian)(tian)開(kai)始低調行事,苦修武(wu)(wu)道(dao),精修符陣之法,暗中出(chu)城歷練(lian),戰赤面鬼(gui),殺百足(zu)獸(shou),奪(duo)血(xue)魂花,奇遇不斷。他(ta)的(de)(de)(de)實(shi)力飛速增長,蕭莫兩家卻仍不知悔(hui)改,埋伏、暗殺,甚至發動全家勢力進山圍剿,而林天(tian)(tian)(tian)神(shen)功(gong)大(da)(da)成,自以一(yi)劍破之。且看少年林天(tian)(tian)(tian)如何喋血(xue)復仇(chou)(chou),歷經(jing)磨(mo)難,終成神(shen)王,一(yi)統(tong)十方之天(tian)(tian)(tian)界!