On their trip to Hong Kong, Emily and Alexander are particularly excited about the Dragon Boat Festival that takes place every year. This paddling competition involves a considerable amount of prize money. The teacher Shung-Lee is desperate to win it because he wants to build a school in his village. But the fisherman Huang-Foo is also after the prize money, no matter what the cost. Fortunately, the mice notice in time that he cuts a hole in Shung-Lee's boat. But this is by no means the end of the mean fisherman's villainy.