Resonance of Mother's Melody

The city of Kongthong, on the extreme edge of the frontier with the state of Meghalaya, is probably the only place in the world where people communicate by whistling. A young researcher decides to study this ancient practice at close hand and goes to the place together with a group of explorers: she will discover that on birth every child is given a special sound, together with their name, a sound assigned to the mother and which will subsequently be used for communication.