这是一部关于爱情和悬疑的剧情，在上世纪20年代上沽城笼罩在阴谋当中，因为警察局长林奥东被人谋杀了，他的养女林九歌被控告，杀父含着冤情入狱。在这样一个情况下，警察龙天宇就发现了九哥杀父案背后的各种证据错综复杂，甚至还牵扯上了上沽城的一些毒品交易和其他的大人物，所以九歌在狱中受尽凌辱，艰难求生。

九歌相信父亲的为人，所以在狱中也想要去逃出监狱，找出父亲的真凶，最后还是决定越狱，在圣约翰监狱的历史上没有发生过成功的越狱事件，因为监狱的墙壁是非常坚固的，并且有严格的巡逻，所以几乎不会出现任何的漏洞，不知道九哥能否凭借一人之力越狱成功而越狱以后又能查明事情背后的层层真相呢？

happensIn the 1920s, when the police chief Lin Aodong was murdered, his adopted daughter Lin Jiuge was accused of being the murderer and imprisoned unjustly. Lin Jiuge's life in prison was very difficult. Fight against the real murderer behind the prison. Since Lin Jiuge was in prison, he has been cooperating with policeman Long Tianyu to investigate the real truth of the case. At this time, it was discovered that someone else killed police chief Lin Aodong. The real culprit was Leng Shinan, a high-ranking customs supervisor in Shanggu. Knowing the harm of drugs and harming everyone, Lin Jiuge finally joined forces with Long Tianyu and others to investigate Leng Shinan's evidence, collected all the evidence, and directly tried Leng Shinan and others. Lin Jiuge also helped other people get rid of drug addiction, so that all drug addicts can return to normal life, and Lin Jiuge himself has lived a stable life ever since.