In the early 20th century, a cryptic ecologic crisis about wipe out the fish that most people care about in the large fresh water ecosystem on earth—the Great lake. The impact resound across the part, destroy local industry, damage little town economy and autochthonal community, and destroy the support of people in the United state and Canada. With small ground for hope, a dedicated grouping of scientist, policymakers, and environmentalist undertake the enigma.