A shy butterfly expert embarks on a dangerous, life-changing trek through one of America’s greatest unprotected wildlands at the urging of his dying wife.

An orphan boy of mixed race finds family with the newly arrived white village doctor in Hawaii. The boy can run like the wind, and begins bringing Doc's medicine to coffee pickers throughout the mountainous region. On an errand, the medicine runner meets the daughter of the plantation owner and a forbidden, young love blossoms like the white "Kona Snow" of the surrounding coffee trees.