Budding environmentalist Jane is a 9-year-old on a quest to save endangered animals. Using her powerful imagination, Jane takes her best friends David and Greybeard the chimpanzee on epic adventures to help protect wild animals all around the world.

When lazy second-generation heir Yau Tin, takes over the grocery store inside the building, he overhauls it and hires all the residents in the building to work there. But soon environmentalist and stock boy, Lam Joi-yeh, leads a revolt against Yau Tin when he puts up a huge poster against the building that affects the residents' quality of life.

A sensitive young man who relishes time in nature is at odds with the rough urban culture in which he lives.