MA FU, YING Sir and the others are invited by PAO Sir to a gathering. When they meet PAO Sir, they misconceive that he is suffering from fatal illness. During midnight, PAO Sir's call wakes MA FU up. PAO Sir asks MA FU if he still remembers their date at "Discovery Cove" and MA FU suddenly recalls what happened over thirty years ago. The group used to go camping at "Discovery Cove" and they promised each other to go there again 30 years later. During a gathering, MA FU and his friends talk about their date at "Discovery Cove" again. PAO Sir suggests going there again and all the others agree. In order to prepare for the trip, MA FU and the other four go to work out in the fitness room. After a while, all of them are exhausted……
