Breadwinner Man-su, who has worked diligently at a company for 25 years, is suddenly laid off. In charge of his family's living, Man-su struggles to be re-employed, but soon learns that there are tons of competitors with similar qualifications out there. Increasingly pressured, Man-su eventually makes up his mind to eliminate his competitors to secure his position. His everyday life slowly begins to crumble, and despite being riddled with guilt and fear, Man-su doesn't stop fighting to protect his family.