The Kim family has hit rock bottom: father, mother, son, and daughter live in a dim, greenish basement and will take any odd job they can find. It isn’t until the youngest son lands a job as a tutor in the Park family’s ultra-chic mansion that the Kims are swept up in the whirlwind of class conflict. With clever tricks, remarkable talent, and great team spirit, they manage to gradually get rid of the Park family’s previous servants.