There is a boys-only secondary school on the Hong Kong Island. In the school, there are some boys who fell in love with orienteering. They love running around the hills with a map. When they find a control flag in white and orange color, they get smiles in their hearts. It is easier to get smiles on their faces - simply when they are together.
However, when they leave the school, they are separated. They need a force to get them together and keep them smiling. After months of planning and meetings, they set up the Hong Kong Island Orienteering Force to make it.