Working long hours in the emergency room, nurse Kana Aoshima befriends musician and frequent hospital patient Shogo Amami. Shogo's therapy visits for his muteness and blindness happen to frequently coincide with Kana's shift, which enables the nurse to get to know the handsome artist well enough to start falling in love with him. Fate intercedes, however, when Shogo is killed after being hit by a car - a development that utterly crushes Kana's will to live. Shogo's spirit is transported to heaven, where it is given the chance to return to Earth to assist Kana through her grieving and to renew her sense of faith in the world - with the only caveat being he cannot reveal his identity to Kana.

北海道・函館。笙吾は3年前の交通事故で失明し声も失った。以来、彼は心を閉ざしていたが、担当の看護師・奏に献身的に支えられてきたことで、生きる勇気を取り戻していく。2人はまた、いつしか心の通じ合う特別な存在になっていた。しかしある日、笙吾は車にはねられ奏の目の前で息を引き取ってしまう。やがて笙吾が目覚めると、そこはまだあの世ではなく現実の世界。彼は流星のチカラで再び数日間の命を与えられるのだった。ただし、誰も笙吾だとは気付きようもない別人の体で。笙吾は戸惑いながらも、ある決意を胸に奏の病院へと向かうのだが…。