Ok-ja and her son Do-hyun falsely register in Daechi-dong, Seoul, for better schooling despite her limited finances. Do-hyun, envious of his wealthy schoolmate Sang-su for receiving disability benefits, learns that he isn't actually disabled, exposing flaws in government benefits. At university, he and his new friend Ji-woo manipulate government policies for entrepreneurial subsidies, intentionally failing to exploit government leniency. Seeking greater wealth, he embarks on a dubious cryptocurrency venture with investor Kevin, sidelining Ji-woo and enjoying brief success before their scheme crumbles due to regulatory scrutiny. They literally try to make bigger money with bigger money, but end up creating a Death Business.

Lee Ba-duk, once called a Ba-duk prodigy, quit playing go. At the local Omok competition, where she played for the prize money, Lee meets with Omok genius Kim An-gyeong and goes to the national tournament. Finally, Lee confronts an inevitable battle with Kim with a terrible secret.