For six years, Lee Jehyeok pushed himself to the limit, cleansing Korea of contamination almost single-handedly. Even when the work began to destroy his body, he kept going.

Then his contamination level reached 99.3%.

With recovery deemed impossible, the agency that once begged him to keep working threw him out of the purified zone. The people who called him a hero replaced his banner with a quarantine notice, and even the reporter whose life he had saved asked him to pretend his expulsion was voluntary.

Worst of all, Cheon Seoyeong, his former partner, who had pushed him past the point of no return, was the one sent to escort him out. Even then, she told him to keep enduring.

They used him until he was no longer useful, then abandoned him.

So when Jehyeok finally recovers and they come asking him to save the country, he has just one question:

“Me? Why should I?”