After Midnight Fly (2001), Jacob Cheung moved to Chinese Mainland to further his career. His secretary at Filmko, Polly Yeung, joined him and served as the screenwriter for Rest on Your Shoulder.

Adapted from an online novel, the film combines fantasy and romance, blending live action with animation. Botanist Yan Guo (Chen Kun) has been studying the healing power of plants for many years when he suddenly becomes terminally ill. His girlfriend Bo Bo (Jiang Yiyan) makes a deal with a deity: she will transform into a butterfly for three years to extend the life of her beloved. When Guo wakes, Bo Bo, now a white butterfly, stays at his home. However, his student Bai Lan (Gwei Lun-mei) and journalist Yang Lin (Gigi Leung) both begin to show him signs of affection, at the same time a major epidemic descends upon them. From the insect world, Bo Bo obtains a formula for the antidote. But how can she, as a butterfly, communicate it to a human being?

This film combines romantic love and fantasy, while tackling issues of environmental protection and epidemics. Cheung employed extensive computer-generated special effects to create the fantastical landscape of the island on which the film is set, contrasting the simple, pure world of insects with a complex, diseased human society. As Bo Bo joins forces with Grasshopper and Ladybug for an insect adventure, Cheung crafts a tale about nature, plants, and insects that not only expresses romantic notions of love, but also explores bigger ideas about the destiny of humankind and their survival.

Courtesy of Edko Films Limited

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