Following the crew of the patrol boat HMAS Hammersley, as they patrol the northern sea border of Australia. They have to deal with foreign fishermen poaching fish, smugglers and with political unrest in a neighbouring island state. 　　译文(2): 跟随巡逻艇 HMAS Hammersley 的船员，他们正在澳大利亚北部海域巡逻。他们不得不应对偷猎鱼类的外国渔民、走私者，以及邻近一个岛国的政治动荡。