For more than 4 decades, Fumie Murakami has suffered from a mysterious illness that was finally diagnosed as Minamata disease. Caused by organic mercury poisoning in the sea, the disease has also taken a toll far away, in inland communities. Learning the truth leaves Fumie feeling both relieved and guilty -- she realizes the fish sold at her family's store likely sickened local people. Now in her late 80's, she's fighting to secure government relief for victims as she continues to live life looking forward.

At a small elementary school on Lake Biwa, kayaking is part of the curriculum. The culmination of the students' training comes in late May, when every 5th- and 6th-grader takes part in a two-day kayak trip. Covering 40 kilometers round trip, the "nature study excursion" immerses the children in the lake's rich natural environment, and teaches them important life skills such as perseverance and cooperation. We follow 25 students as they gear up for a journey that will test them, and help them grow.