Ki-soo (Kim Byung-chul) and Zhong Da (Liu Yaren) are brothers who have lost their parents since childhood and regard each other as the only harbor and dependence. Ki-soo was honest and steady, and he worked hard just to save money to support him and his brother. Although the reality is so pale, but Ki-soo's dream has never faded, he knows that as long as he continues to work hard, one day he will be able to give a solo concert in the Maldives that belongs to him alone. Zhong Da's personality is just the opposite of Ki-soo, doing nothing all day long. Zhong Da especially envied the heroes on TV who were bathed in a hail of bullets and fantasized about getting a real gun one day and being able to do great things. To Zhong Da's surprise, his fantasy came true one day, and he really got a fake gun. However, at the same time, he and Ki-soo were also involved in the gang struggle and surrounded by danger.