A city in the sky, adjacent to the clouds and unfathomably deep, it can leave the ground but cannot escape time and impermanence. After graduating, four children embark on their own paths, each facing new challenges, and each weathered by life's changes. Life hangs by a thread, rising and falling like dust. What does existence truly seek? Gatherings are finite, farewells are uncertain. Where can one find the beauty of what once was? Derived from Pu Yuemei's oil painting series *Suspended City*, it features a unique worldview, fantastical plot, and exquisite metaphors, articulating a lament for life.