Lion, Crater, Bill, Calm and Mouse are five orphans adopted and mentored by Cho Sir whom they refer to as Papa. The five of them grew up as sworn brothers and become mercenaries belonging to The Agency. One time, they orchestra a mission to steal a truck load of medicine from a pharmaceutical company to help African children. However, the truck turns out to be full of gold belonging to The Agency. One of the brothers turned against them. (Source: Wikipedia)