There is a family from South Korea known as the Kims. It consists of father Ki-taek, mother Chung-sook, son Ki-woo, and daughter Ki-jeong. They are decidedly not well off, living in a small basement apartment. The dwelling is unkempt with dishes strewn everywhere and they often find themselves needing to hold their smart phones to the ceiling to get any kind of Wi-Fi reception. They are barely staying afloat by working various low-paying odd jobs. One day, Ki-woo’s friend, Min-hyuk, intends to study abroad, and gives the Kim family a scholar’s rock, which is supposed to bring them wealth. Feeling pity for his friend, Min-hyuk suggests that Ki-woo pose as a university student and take over his job as an English tutor for one Park Da-hye. The Park family is very wealthy, so Ki-woo may have stumbled into something that can help his family leave their squalid living conditions.