巧虎的妹妹小花，夢見一棵神祕的大樹在求救，卡歐先生告訴他們。這是生長在霧之島的天空樹，是維護森林的母親之樹。天空樹為什麼求救？霧之島遇到什麼危險了嗎？巧虎他們決定一同出發前往霧之島。在霧之島，巧虎他們遇見了守護天空樹的洛亞跟霧島族人，才發現原來有人在傷害天空樹，到底是誰呢？巧虎跟洛亞他們要如何克服困難，守護森林，搶救天空樹呢？

This is the fourth movie starring a tiger boy named Shimajiro.

I am a 66-year-old cicada. There was a big earthquake. There was a big tsunami. There also was a big accident.

A man carries out his "last rites" as he becomes one with nature

Do people who try to kill themselves not want to live anymore? No, not at all, says the hotel employee in Shell and Joint, a woman who has made multiple attempts herself, including by jumping into a shark-infested sea. Deadly serious, she tells her colleague she blames it all on a bacteria that controls her mind. Short-film maker Hirabayashi Isamu's feature film debut is full of these offbeat conversations. He portrays various characters at a Japanese capsule hotel in a series of absurdist sketches. One moment puppetry insects philosophise about death, the next a bunch of men discuss erections in the sauna. Hirabayashi uses tight, static framing, making everything extra surreal, and masterfully forges it into a fascinating whole that examines the distinction between man and insect and the thin line between existence and non-existence.