In the future, with the continuous advancement of science and technology, human medicine will reach an unprecedented height. When one of your organs is sick, you don't have to worry about dying, nor do you have to wait for an indefinite donated organ. You can return to normal life by transplanting an artificial organ. Of course, there is no free lunch in the world. Brand new organs are accompanied by high purchase prices. Once the recipient cannot afford the cost, he will face the tragic fate of being killed and having his organs taken away. Remi (Jude Law) belongs to the alliance company that sells organs. His job is to hunt down customers who delay repayment. With this ruthless job, he lives a pampered life. However, bad luck suddenly came. He transplanted an artificial heart from the alliance due to a serious illness, and was hunted down by his former friends because he could not repay the money. The identities of hunter and prey were swapped overnight...