North Korean Navy Private First Class Lin Donghai (Kong Hyung-jin) is not satisfied with the monotonous military camp life, and often uses his cleverness to enjoy life, for which he is punished by Captain Cui Baitou (Jung Jun-ho). Captain Cui is old-fashioned and serious, but he also acts arrogantly with his rank advantage. On that day, Cui Baitou and the deck chief ordered Lin Donghai to row a small boat to the sea for leisure, but they were swept away by the storm. Cui and Lin drifted to South Korea... On the Korean beach, which is full of beauties and seems like a paradise, Cui Baitou quickly established the goal of this battle in South Korea as returning to the north, but Lin Donghai is more concerned about solving basic needs such as food and clothing in a daring way, and dragged his superior into the water. At the same time, on this beach, two police officers who were ordered to find the director's daughter Han Nara (Yoo Hyun-jeong) who had left home for a trip privately also found here. Cui and Lin met Nara by chance, so under the guidance of the big plan to return to the motherland, the North Korean Navy, the beauties, and the police began a crazy, romantic and vulgar journey.