Chatrak means mushrooms.
This film is directed by Vimukthi Jayasundara, the first Sri Lankan to win the Camera d'Or in 2005 at Cannes.
Rahul (Sudeep Mukherjee) is a Bengali architect working on construction sites in Dubai. He returns home to Kolkata after several years. His girlfriend, Paoli (Paoli Dam), is waiting for his return.
Rahul's seemingly successful life is overshadowed by the search for his brother (Sumeet Thakur), who is now believed to be insane and living in the forest, where he sleeps in the trees and feeds on the vegetation. This brother befriends a French soldier in the jungle. Rahul and Paoli go in search of his lost brother.