女孩與貓一起生活。她每天上班前，總特別憂鬱心煩，頭上有烏雲雷雨。而貓每次都派出一個幻影幫手，去吞噬她憂慮情緒的烏雲，女孩都能再度打起精神出門。直到有天，烏雲已多到從貓肚子裡滿溢出來，貓終於要承受不住女孩的憂煩了…

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A girl lives with a cat. Every morning, before she walks out for work, she always feels terribly depressed. The cat helps her defeating the depression. The girl can walk out without depressed in the end every time. Until one day, the depression is too much that the cat can not afford it...