伯伦希尔魔(👷)法(🔨)学(🆓)院的教授永乐(lè )在图书馆偶遇(yù )了一只叫灰(🛍)羽(yǔ )的精(jīng )灵,得知精灵都是(shì )有(yǒu )(🐉)愿望未(🍖)完成才会(huì )留(liú )在(💤)世间,永(yǒng )(🌫)乐决定帮灰羽完(🏇)达成愿(yuàn )望。因为灰羽(yǔ )喜欢听永(🗄)乐读书(shū ),永乐便经(jīng )常与(yǔ )灰(huī )羽(yǔ )挑灯夜读,灰羽也(yě )(🎫)一(🥞)直听(😚)得兴致(🙁)盎(àng )然,一(yī )(🚑)人一(🥀)精灵相处(🐖)好不(bú )融洽(⏺)。可(🌙)没想到当永乐(lè )帮助灰(🛑)羽实体化之(zhī )后,灰羽竟然性情大变,为了(le )让(ràng )灰羽不再(🤠)继续(xù )黑化,永乐不得不让灰羽消失在(🤷)世间…(🔔)…