In the Deep, Dark and Dangerous

Half siblings, Anand and Vrinda are as different as chalk and cheese.12-year-old Anand enjoys science and quiet time in nature and dislikes authority while 14-year-old Vrinda is an outspoken debater, an athlete, and a natural leader.
Vrinda's inability to be a responsible elder sister and Anand's refusal to accept Vrinda as the elder sister gets them stranded in one of the largest unexplored wilderness of India.