讲述了宋代天才画(huà )师(✒)少(shǎo )年希孟(mèng )一路(lù )(🐌)成长(🔼),与宋徽(huī )宗一(yī )同绘(huì )就千里江山图的故(🎹)事。希孟在(zài )(🌰)画院中(zhōng )与(🗼)侍卫阿吉生死并肩,在密室里与素(sù )(♑)未(📼)谋(móu )面(miàn )的导师(🐿)虚心求(👑)学,在朝廷上(🕖)诘问(wèn )宋(🙍)徽(huī )宗治(zhì )(🔲)国(🥄)之(zhī )错。当这亦师亦友亦仇敌的三人合(🙁)为一人时,希孟(mèng )(🕕)在挣(zhèng )扎与(🤷)矛盾(dùn )中和解,以身入(🔩)画,绘出了震颤世(🖲)间的一笔青绿。