Na Kyung-soo, a diver, is angered to learn that the Coast Guard is assigning responsibility for the death of a fellow diver during the Sewol ferry disaster recovery to Ryu Chang-dae, the representative of civilian divers, and charging him with manslaughter.

Young-mi, the bookkeeper at a factory, is ridiculed for her dowdy appearance and called ‘Ms. Apocalypse’ by her colleagues. Do-young, a delivery driver, is the only one to show her any decency and kindness. As her feelings for him grow, Young-mi strives to get him off the hook even when she finds out that Do-young has been embezzling company money. It becomes the last day of 1999, and in the midst of people's fear that the world will come to an end, Young-mi gets arrested for aiding Do-young's crime. And thus, her new millennium starts wretchedly. As she walks out of prison after a few months, she comes across Do-young’s wife, Yu-jin, waiting for her and this unexpected visitor makes an implausible but compelling offer.

After a few months of social adjustment training, the North Korean refugee Jina moves to a small studio in Seoul and starts her new life. To bring her father to South Korea, she needs money but no matter how hard she works, the discrimination doesn’t let her save enough money.

Hyo-jeong, a 69-year-old woman, is raped—but few people, including the police, are willing to believe what she says.

Sang-sook is a competent politician who captivates the public with all kinds of nice words. One day, Sang-sook visits her grandmother who lives in the isolated house. But when she returns home, she finds out that she is not able to lie anymore.

When the investigation of 'Koreagate' takes place, Park Yong-gak, a former KCIA director who knows everything about the government's operations, heads to the United States in exile.