The film intertwines the stories of three characters who mark the lifestyle and geography of the valley. DOWN IN THE VALLEY a thriving pear cultivator, Cao, sprays pesticides to harvest fruit with a perfect shape. In springtime, in the absence of insects, he needs to pollinate all his trees by hand. Zhang, the last beekeeper in the area, escapes UP NORTH, searching for clean spots most of the year. HIGH UP ON THE SLOPES of the valley that still support wildlife, a poor farmer, Ye, bets his last money on an organic cherry orchard. Cao, Zhang and Ye are shown in relation to nature as the seasons change - in an orchard without pollinating insects, among the hives of the last domesticated bees and in a mountainside forest where wild bees still fly. In Bio, the strength of portraying social documentary is paired with the magic of the artistic nature film, Kristersson’s trademark. Candid scenes and evocative images will carry the narrative. The life in the beehive and the pupation of butterfly larvae will intertwine with Zhang’s tearful parting from her daughter, Ye’s happiness at selling his crops to a good price and Cao’s plans to pass on the pear cultivation craft to his son. We portray man as a species of nature, a part of the local ecosystem. Cinematic nature photography, authentic human activities, and Kristersson ‘s unique attention to animal behaviors, will make the viewers experience the tight, but fragile,networks of existence that are put at risk without pollinators.