The earth is on the verge of collapse under the double blow of pollution and environmental disasters. In order to survive, people have created an isolated city called ECOBAN (the name is a combination of ecology and ban, which means "destroying the ecology"), and this city is completely dependent on the pollutants of the earth. However, only a very small number of selected people can enter this isolated city, and these people become the privileged class in the city. As for the majority of others, they are helplessly abandoned and their bodies are exposed in the endless wilderness. The source of energy for ECOBAN is pollutants. People living in ECOBAN have enough food and clothing, while refugees living in another place called MARR are starving. Despite this, the people of ECOBAN still want to eliminate the residents of MARR to obtain more pollutants. After a while, there are reports that the pollution level of this land is decreasing, and many people begin to hope that the whole earth can be revived. Conflicts arise because some government officials decide to continue polluting the land so that they can keep the privileges of living in the city. At this time, an intruder sneaks into ECOBAN and commits crimes crazily, and the local police are completely at a loss. Jay is one of the police chiefs. She is desperately trying to track down the intruder, only to find out that the intruder is her first love. How should Jay choose between work responsibilities and her love for her children? At the same time, Simon, the head of the security department, is also deeply in love with Jay. What will happen when he also finds out about Shua's existence? That is the hope of all people living under the dark cloud of environmental pollution. That is also the hope of people who are suffocated by various pressures. That is also the promise our hero made to his beloved.