一個女孩夢到自己從高空墜落,醒來後發現自己身處在溢滿水的繭中失去記憶,而在四周迎接她的是一群擁有灰色翅膀,卻無法飛翔的人們。 A girl dreams that she is falling from the sky. Upon awakening, she emerges from a cocoon with no memories. She encounters a group of winged people.