《杀手情人》这部电影讲述了一个错综复杂的故事，主要围绕着主人公小六的卧底生涯展开

小六是一名身经百战的杀手，他长期卧底在毒贩张克帆的组织里。在执行任务的过程中，他深入敌人内部，为警方搜集情报，为正义与公平而战。然而，卧底生涯并不是一帆风顺的。他时刻面临着巨大的危险和心理压力。

就在一次交易行动中，张克帆陷入了陷阱，陈港姐带领大队警察赶到现场。在交火的混乱中，张克帆的手下强被误杀。这让小六陷入了极度的矛盾和挣扎。他不得不权衡自己的选择，究竟是继续卧底完成任务，还是趁机脱离这危险的生涯。

最终，小六选择了脱离卧底生涯，他渴望拥有一个平凡安稳的生活，与自己的儿子共享天伦之乐。然而，命运却似乎对他开了一个恶意的玩笑。就在他准备重新开始新生活时，他的儿子六郤却在莫名的情况下遭到了杀害。

The movie "Killer Lover" tells an intricate story, mainly revolving around the protagonist Xiao Liu's undercover career

Xiao Liu is a seasoned killer who has been undercover in the organization of drug dealer Zhang Kefan for a long time. In the course of his mission, he goes deep into the enemy's interior, collects intelligence for the police, and fights for justice and fairness. However, the undercover career was not all smooth sailing. He is always facing great danger and psychological pressure.

During a trading operation, Zhang Kefan fell into a trap, and sister Chen Gang led the police brigade to the scene. In the chaos of the exchange of fire, Zhang Kefan's men were accidentally killed. This caused Xiao Liu to fall into extreme contradictions and struggles. He had to weigh his options, whether to continue undercover to complete the task, or to take the opportunity to escape this dangerous career.

In the end, Xiao Liu chose to leave his undercover career. He longed to have an ordinary and stable life and share family happiness with his son . However, fate seems to have played a malicious joke on him. Just when he was about to start a new life again, his son Liu was killed inexplicably.