In Wim Wenders' movie "Wings of Desire", Berlin is guarded by two angels: one is Cassiel, who coldly watches human suffering, and the other is Damiel, who often feels sympathy for human pain. The two, dressed in loose angel robes, wander around the city, listening to people's prayers, and silently observe people's inner world. The heart affairs of the circus Marian draws Damiel's sympathy. This circus angel actor makes Damiel yearn for secular life, and he decides to become a human being to pursue a happy relationship.