周凯（王凯 饰）参与走私，被身为缉毒警察的弟弟周超（马天宇 饰）逮捕入狱。三年后，周凯出狱，改过自新。曾经的手下阿仓（余皑磊 饰）已为毒贩头目，为获取周凯的海外客户资料，设计加害周凯。江湖中的好兄弟马柯（王大陆 饰）为了替周凯报仇，失去一条腿。自己的亲弟弟周超不相信哥哥周凯已金盆洗手，不断搜集证据，欲亲手逮捕周凯。最终，周凯与警方合作，逮捕了阿仓，两兄弟重归于好。
辛亥革命成功后，正义都督蔡松坡被袁世凯软禁，蔡为免受迫害，佯作诗酒风流，整日与名妓小凤仙泡在一起。副官求见蔡，遇上武文渊，两人不打不相识，并共商营救蔡出城之策，惟他们的行踪已为袁世凯之侦缉处长所知……
Gyeong-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeon-su, but it's hard to see her after she moved out on her own. Meanwhile, Yeon-su, who is suffering from her ex-boyfriend, Sang-hyun, argues with him again and visits her mother’s house. After Yeon-su left, Gyeong-ah receives a shocking message from a stranger.
