Donald (Colin Firth) is a frustrated small entrepreneur. The new navigation instrument he invented was not recognized by the market because of its narrow audience, which made him feel ashamed to face his family. The round-the-world sailing competition held by the Times attracted Donald's attention. He absolutely gave it a try to participate in the competition to save his last dignity. This competition is very difficult. Donald must complete the long race alone, during which the ship cannot dock. After the initial excitement subsided, Donald was gradually surrounded by the fear of the unknown, but at this time, the town where he lived and the surrounding neighbors and families had already regarded him as a sailing hero and placed high hopes on him, which made Donald unable to get off the tiger and had to bite the bullet. The accidents that Donald was worried about came one after another.