YAT MOON is interested in a new PDA mobile phone. Luckily, he obtains a golden coin while eating chocolate. This golden coin can be used to exchange for the PDA mobile phone he likes. YAT MOON doesn’t want to share the prize with others so he hides the golden coin in the glutinous rice bin. The Dragon Boat Festival is coming. The Ko family takes out the glutinous rice to make glutinous rice dumplings. YAT MOON doesn’t want to reveal the truth so he voluntarily helps to deliver the dumplings. He hopes to find the golden coin but it is missing…