Deep in the forest there lives an amazing caterpillar tribe. They never become butterflies, what’s more, they regard butterfly as a taboo, with one exception - Nick, who dreams that one day he will have wings to fly to the legendary Jade Tree.

Not being understood by his father and the tribe, Nick leaves to find the Jade Tree. When he finally turns himself into a butterfly, he discovers that he only has one day left to live. Nick has to seek a way to prolong his life while searching for the Jade Tree. But the forest is full of danger - dangerous chomper that only look beautiful, Hager the bat who desires to destroy all butterflies, Frederica the spider who is strange in mind, the mysterious science freak Sigmund from the cave of immortality… Nick manages to get out of all the troubles with the help of singer Martha and scientist Sawyer, friends whom Nick meets in the forest. During his journey, Nick gradually learns team work and understanding others. He learns the value of dreams.

The sun is setting. Nick chooses to fly to the Jade Tree as a butterfly instead of going back to be a caterpillar. He is determined to live for his dream. But at this moment, he hears the news that his father is captured by Hager……