He has been searching for them since 20 years , accompanied by his younger brother Prem Chopra .
After 20 years of searching , their grandfather Parikshit Sahni , succeeds in finding them on the island .
grandfather has been searching for them since 20 years , accompanied by grandfather 's younger brother Prem Chopra .
After 20 years of searching , their grandfather Parikshit Sahni , succeeds in finding them on the island .