元朝末年,群(qún )雄(🆓)纷起,武林动荡。江湖传(chuán )闻,得到屠龙(🛍)刀倚天(tiān )剑者,可(🔧)以成(chéng )为武林至尊,号令(lìng )天下,莫敢不从。一(👋)时间风云四起,引发了武林(⚫)中对屠龙刀倚天(tiān )剑的争夺(duó ),几(jǐ )段姻(✳)缘(yuán )和(hé )孽(niè )缘也由(yóu )(🚥)此产(chǎn )生。武(wǔ )当派张翠山与天鹰教殷(yīn )(🖍)素素因(yīn )屠龙刀相遇相恋(💞),最后亦因屠龙刀被正派(🚨)人士(shì )所(suǒ )逼迫,双双自尽。他(㊗)们的(🥔)儿子张(🙂)无忌(🔝)长(✋)大(🐑)成人后,机缘巧(qiǎo )合(hé )下练(🙉)成了绝(🎾)世武功(gōng )(🍄)“九阳(🤷)神功”和“乾坤大挪移”,成为(🎋)了(🥕)明(míng )教(jiāo )(🐀)教(🧟)主(zhǔ )(🚴)。张无(wú )忌与元朝郡主赵敏、峨嵋派周芷若、(💍)表妹殷离和(hé )婢女小昭(🌹)都有(🐨)着千(🥋)丝万缕的爱意(yì )。然而(🐩),看似柔(🏒)弱(🙎)的周(🎥)芷(🐡)若,却是个十(shí )足的“腹黑女”,她(tā )(👵)为了获取倚天(🏃)剑(jiàn )屠龙刀(dāo )的秘(mì )密,不惜杀害殷离,陷害赵敏。张(zhāng )(🚽)无(🎐)忌虽看清(qīng )(🕕)了周芷若(ruò )(📤)真实面目,但仍割舍不下(xià )她(tā )。其后,张(zhāng )无忌化解(jiě )了武林种(💁)种恩怨,辞去教(jiāo )主之(🍯)位,与(yǔ )赵(zhào )(🈂)敏寄迹蒙(méng )古。