Watch 10 Years After the Sinking, Zero-Sum for Free: How to Stream the Movie Online at 123Movies. . Ten years ago, 304 innocent people aboard the Sewol ferry in Korea lost their lives at sea. The reason for the sinking and the complete failure of the rescue are crucial factors yet to be revealed. But the government continues to withhold key evidence, citing national security reasons. This documentary finds a conclusion of why all the matters have gone wrong.