There are 100,000 street children in Kolkata. At the railway stations children on their own take refuge on lit platforms at night, hoping to protect themselves from abuse. During the day they make a few rupees by rag picking, working as coolies or in roadside food stalls. Many are ill and malnourished and often they become addicted to glue, which helps them forget the trauma of their life. Over the past three decades the lives of 3,000 of these children have been transformed by a an extraordinary couple, Tim and Erica Grandage, and their team at Future Hope.